415 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 preparation method of a rapidly-formed Janus structure stretchable electrode, an electrode material system is a material system composed of thermoplastic polyurethane (TPU), liquid metal particles and N, N-dimethylformamide (DMF), and electrode forming comprises two self-assembly processes. In the first self-assembly process, the liquid metal particles rapidly settle to form a Janus structure under the action of gravity; and a second self-assembly process: quickly dissolving DMF in water under the action of phase separation, and quickly separating out TPU to form a porous structure. The whole electrode forming process is about 15 seconds, which is the fastest stretchable electrode film forming process so far. The electrode has high conductivity, high stretchability and insensitivity to tensile strain, the electrode can spontaneously form a Janus structure with one conductive side and the other insulated side so as to achieve a self-protection structure for the whole electrode, and the electrode is expected to be applied to the flexible electronic fields of electronic skin, human body information detection, stretchable electronic devices and the like.

The invention relates to a liquid metal / MXene / sodium alginate / polyacrylamide composite hydrogel material as well as a preparation method and application thereof. The hydrogel material comprises liquid metal microspheres, a hierarchical porous network formed by sodium alginate and polyacrylamide, and flaky MXene. The preparation method comprises the following steps: S1, adding liquid metal into an aqueous solution, and carrying out ultrasonic dispersion to obtain dispersion liquid; s2, adding the dispersion liquid into a sodium alginate solution, and performing ultrasonic treatment to obtain a sodium alginate-coated liquid metal aqueous solution; s3, acrylamide is dissolved in deionized water, then the aqueous solution of the liquid metal wrapped by sodium alginate is added, then a cross-linking agent, an initiator and MXene are added, and the mixture is stirred to be uniform; and S4, pouring into a mold, and heating to form the hydrogel. The composite hydrogel material prepared by the invention has the advantages of high stretch rate, strong electromagnetic shielding performance and the like, and can be used as electronic skin for electromagnetic shielding, human health monitoring, man-machine communication and soft robots.

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.

A resistive flexible pressure sensing array only with a single pair of electrodes and a preparation method thereof belong to the technical field of sensors, the resistive flexible pressure sensing array comprises a flexible sensing layer and a flexible electrode layer, the flexible sensing layer and the flexible electrode layer form an integral structure in a superposition combination mode, and the two layers are respectively connected with a positive electrode and a negative electrode of a power supply through electrode leads. The flexible sensing layer is formed by alternately connecting a substrate, and a pressure sensitive module and a connecting resistor module which are laid on the substrate in series; the flexible electrode layer is composed of a substrate and an electrode module laid on the substrate. On the basis of an up-down series circuit which is formed after an array is pressed and is connected by a single pair of electrode leads, the resistance value range of connected resistors in the circuit is changed through the difference of the number of connected resistor modules in the circuit, and the purpose of identifying the pressure sensing position is achieved; the purpose of detecting the pressure is achieved through the resistance change condition when the pressure sensitive module is subjected to pressure. The invention has the advantages of simple preparation process, high sensitivity and strong stability, and can be applied to intelligent wearable equipment, electronic skin and other pressure sensing equipment.

A compliant tri-axial force sensor is disclosed that may be incorporated into soft robots or electronic skin. The sensor comprises a first electrode layer including column electrodes in a first orientation; a second electrode layer including column electrodes in a second orientation that is orthogonal to the first orientation; a force-dependent active layer provided between the first electrode layer and the second electrode layer configured to change at least one property—such as quantum tunneling, conductivity, resistivity, or electrical charge—when subjected to a force; at least one three dimensional bump arranged to transmit externally applied force through the active layer; and at least one spacer arranged to maintain a separation between two or more layers in the sensor until an external force is applied.

The invention discloses a multi-stage micro-nano structure flexible wearable pressure sensor inspired by skin, and a preparation method and application of the multi-stage micro-nano structure flexible wearable pressure sensor. The sensor is composed of a piezoresistive layer, an electrode layer and a packaging layer. The piezoresistive layer takes polydimethylsiloxane (PDMS) as a flexible substrate, a submillimeter-level cylindrical array main structure and a micron-level skin-like spinous secondary microstructure randomly distributed at the top end of the submillimeter-level cylindrical array main structure are constructed through a composite mold, and a nano-level conductive network is formed by adopting an MXene / MWCNT hybrid material through a dispensing process, so that multi-scale stress synergistic response is realized; the electrode layer takes a degradable lignocellulose biological plastic film prepared from bagasse as a base material, and a silver paste interdigital electrode is loaded through a screen printing process; the packaging layer is fully coated with a medical-grade polyurethane (PU) film so as to ensure signal stability. The sensor shows ultrahigh sensitivity, wide detection range and low detection limit through the synergistic effect of the submillimeter-micron-nano multilevel structure, and can be applied to the fields of human motion monitoring, intelligent electronic skin and the like.

The invention belongs to the field of flexible electronic devices, and discloses a preparation method of a high-performance strain sensor based on a nano-silver nano-cellulose seepage network. According to the hydrogel, polyvinyl alcohol is used as a matrix, a seepage network formed by polydopamine anchored nano-silver / nano-cellulose PCNF is used as a conductive phase, glycerin is used as an anti-freezing humectant, and through the synergistic effect of a three-dimensional seepage conductive network and a dynamic hydrogen bond network, the defects that traditional hydrogel is poor in sensing stability, poor in environmental stability and low in mechanical strength are overcome. The preparation process is simple, the conductive hydrogel is high in tensile strength, high in sensitivity and good in cycling stability and has an antibacterial function, and an assembled strain sensor can monitor a human motion signal in real time and is suitable for the fields of wearable equipment, electronic skin and medical monitoring in an extreme environment. Through material system and process innovation, integration of high performance and multiple functions is achieved, and wide application prospects are achieved.

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 distributed multi-mode flexible sensor based on a Bragg fiber grating and a multi-mode sensing method, and the sensor comprises a dielectric layer which is used for enhancing the non-contact electric field response, and achieving the detection of the approaching distance of a target object; the optical fiber sensing layer is arranged below the dielectric layer and comprises distributed Bragg optical fiber grating sensors arranged in an S shape and an elastic silica gel layer, the optical fiber grating sensors are used for collecting distributed tactile force signals and temperature signals, and the elastic silica gel layer wraps the optical fiber grating sensors to achieve stress transmission; the conducting layer is arranged below the optical fiber sensing layer, is made of an array type flexible conducting material and is used for collecting and transmitting multi-mode electric signals; an encapsulation layer; wherein the dielectric layer, the optical fiber sensing layer and the conductive layer cooperatively realize multi-mode fusion of distributed proximity sensing, distributed force touch sensing and non-contact temperature sensing. The multi-modal flexible electronic skin can meet the requirements of accurate acquisition and real-time feedback of multi-modal information in a complex environment.

The invention discloses a fault self-checking and error-reporting system for a robot, and relates to the technical field of computer software, and the fault self-checking and error-reporting system comprises a power electrical detection module, a physical mechanical detection module, a software detection module, an ethical detection module and a fault feedback module. The power electrical detection module is used for detecting short circuit and overload fault conditions in a robot power electrical system; the physical mechanical detection module is used for detecting the fault condition of physical hardware, and the physical hardware comprises but is not limited to a motor, a sensor and electronic skin. According to the fault self-checking and error-reporting system for the robot, a plurality of modules are integrated, so that the operation condition of each component of the robot can be comprehensively and quickly detected and reflected, the fault detection and diagnosis efficiency is remarkably improved, maintenance personnel can quickly position and solve the fault problem, and the fault detection and diagnosis efficiency is improved. The maintenance cost and the maintenance difficulty are reduced, and the running state of the robot can be monitored in real time.

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 discloses a flexible pressure sensor based on a metal oxide thin film transistor and a preparation method and application thereof. The flexible pressure sensor based on the metal oxide thin film transistor comprises a flexible substrate, a gate electrode layer, a gate dielectric layer, a metal oxide channel layer, a source electrode, a drain electrode and a piezoelectric layer, the piezoelectric layer comprises a piezoelectric polymer, ZnO nanoparticles and MXene nanosheets, and the surface of the piezoelectric layer is provided with a convex micro-nano structure. The flexible pressure sensor based on the metal oxide thin film transistor has the advantages of excellent electrical properties, good flexibility, high sensitivity, easy integration, simple preparation process and low cost, is suitable for the production of large-scale sensor arrays, and has very wide application prospects in the fields of flexible touch screens, human-computer interaction, electronic skin and the like.

The invention relates to an organic artificial synaptic transistor pressure sensor based on a suspension structure and an array, a preparation method and application thereof, and belongs to the technical field of semiconductor devices and sensing. The pressure sensor is composed of a substrate, source and drain electrodes, a supporting layer and a suspension structure based on an organic semiconductor layer, a dielectric passivation layer, a polyelectrolyte dielectric layer and a flexible grid electrode, and current change is caused through contact change between the organic semiconductor layer and the source and drain electrodes so as to achieve pressure response. The pressure sensor has the advantages of low power consumption, fast response, high sensitivity, wide detection range and the like, and can simulate a biological synapse function to realize a pressure synapse characteristic which is crucial to complex signal processing. In addition, the integrated array of the pressure sensors can be combined with an algorithm to realize high-accuracy touch recognition of braille characters. The results provide a new opportunity for the potential application of the method in bionic electronic skin, touch imaging, electrical equipment monitoring, sensing, storing and computing intelligent terminals and man-machine interaction systems.

The invention provides a resistance type whisker sensor, an electronic skin and a preparation method thereof, the resistance type whisker sensor comprises a substrate layer, a liquid metal-carbon nanotube sensitive material layer and a packaging layer, the liquid metal-carbon nanotube sensitive material layer is packaged between the substrate layer and the packaging layer, the liquid metal-carbon nano tube sensitive material forms a conductive network, the conductive network is composed of liquid metal particles and carbon nano tubes generated by laser ablation, and the liquid metal particles are connected through the carbon nano tubes. In the nature, many organisms realize high-precision tactile detection by virtue of tentacles, for example, beards of animals such as cats and rats can sense tiny changes of the surrounding environment and recognize the shape, texture and vibration information of objects, and the high-sensitivity tactile sensing capability plays an important role in survival and environmental adaptation of the animals. The invention provides the high-sensitivity electronic whisker, and provides the electronic skin based on the whisker sensor array.

The invention relates to a capacitive mechanical sensor based on a flexible electrode, an electronic skin and a robot. The sensor comprises a base body, a positioning piece, a CDC and a processing module. A lower electrode is arranged on the surface of the substrate, a flexible upper electrode is arranged above the lower electrode, and the projection of each upper electrode relative to the lower electrode at least covers partial area of the corresponding lower electrode; the positioning piece is fixed on the base body and is provided with an elastic first part higher than the lower electrode; one end of the upper electrode is fixed relative to the lower electrode or the first part, the other end of the upper electrode is directly or indirectly physically connected with the first part, the first part is lifted relative to the lower electrode to form a bent electrode, and the upper electrode and the lower electrode are isolated through an insulating layer; the first part deforms under the action of external force to drive the upper electrode to change the indirect contact area of the bent part on the lower electrode; the CDC is coupled with the corresponding electrodes to obtain capacitance between the upper and lower electrodes; the processing module is coupled with the CDC and is used for outputting an electric signal representing the acting force according to the capacitor.

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 invention relates to the technical field of sensors, in particular to a flexible multifunctional touch sensing electronic skin and application, and the flexible multifunctional touch sensing electronic skin comprises a deformation module, an imaging module and a deep learning algorithm processing module; the deformation module comprises a mark layer provided with a mark pattern; the deformation module is used for capturing deformation information of the marking layer caused by external stimulation in real time; the imaging module comprises an embedded camera; the imaging module is used for acquiring a real-time image of the marking layer of the deformation module and reflecting the characteristics of tactile stimulation through image data; and the deep learning algorithm processing module is used for processing the image data captured by the imaging module in real time through a deep learning algorithm, extracting feature information in the tactile signal and further analyzing the property and the distribution of the external stimulation. According to the method, the deep learning algorithm and the visual tactile perception are combined, so that the tactile perception precision is improved, breakthrough is realized in the aspects of three-dimensional force decoupling and real-time recognition of complex actions, and the method has higher application potential and wide prospects.

The invention relates to an FPC-based flexible intelligent sensing electronic skin, belongs to the technical field of integrated circuits, and solves the problem of poor contact sensing stability in the fields of robots, medical health and the like in the prior art. The skin comprises a flexible touch sensor array, a row selection module and a sensor interface circuit. The flexible touch sensor array is used for sensing an external pressure signal and converting the pressure signal into a current signal; the row selection module is used for selecting rows of the flexible touch sensor array through high and low levels; and the sensor interface circuit is used for selecting columns of the flexible tactile sensor array and converting the current signals of the array elements corresponding to the selected rows and columns into digital signals which are used for representing the pressure value of the flexible tactile sensor array. The characteristics of softness, stability and safety of the flexible sensing electronic skin are realized.

The invention belongs to the field of conductive ink, and discloses conductive ink based on PEDOT: PSS and carboxylated carbon nanotubes, and the conductive ink is prepared from PEDOT: PSS, carboxylated carbon nanotubes, [EMIM] [TCB], polyacrylate, salicylic acid and DMSO. According to the conductive ink with PEDOT: PSS as the main body, [EMIM] [TCB], carboxylated carbon nanotubes, salicylic acid and DMSO are introduced to improve the performance of the ink, the obtained conductive ink is high in conductivity, high in oxidation resistance and good in printing performance, and a flexible transparent electrode prepared from the conductive ink is high in conductivity and light transmittance and can be well suitable for the fields of human body wearable, robot electronic skin and the like.

The invention discloses a bionic finger, a bionic hand and a robot, and relates to the technical field of robots. The bionic finger is provided with a holding side and comprises a finger body, and an assembling groove facing the holding side is formed in one end of the finger body; the electronic skin is arranged in the assembling groove, and an induction face is arranged on the side, facing the holding side, of the electronic skin; the flexible part covers the side, facing the holding side, of the assembling groove and makes contact with the sensing face. According to the bionic finger, the size of the bionic finger can be reduced.

The embodiment of the invention discloses a preparation method of bionic electronic skin based on PVA / cellulose nanofiber, wearable equipment and a monitoring system. The preparation method comprises the following steps: uniformly mixing a cellulose nanofiber solution, an MXene colloidal suspension and water to obtain a mixed solution; heating and stirring polyvinyl alcohol, boric acid, glycerol and the mixed solution at 90-95 DEG C to obtain a PCM hydrogel precursor solution; uniformly coating the PCM hydrogel precursor solution to form a film, and performing directional freezing to obtain D-PCM hydrogel; the D-PCM hydrogel is soaked in a mixed solution of a salt solution and glycerin for salting out for at least 6 h, and the DS-PCM hydrogel capable of being used as the bionic electronic skin is obtained. The bionic electronic skin has unique layered pores and excellent air permeability; the anti-swelling performance is improved through a strong hydrogen bond cross-linked network, and the problem that a hydrogel sensor is prone to failure in a humid environment is solved. In addition, the material has various high-sensitivity sensing capabilities, and tiny physiological signals and environment temperature changes can be accurately captured.

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 belongs to the technical field of flexible sensors, and particularly relates to a temperature-pressure dual-mode decoupling flexible sensor based on a full resistance type response mechanism. The invention discloses a preparation method of a dual-mode decoupling flexible sensor capable of simultaneously detecting a temperature signal and a pressure signal, the sensor comprises a five-layer structure, the upper layer and the lower layer are PET packaging layers coated with silver electrodes, and the middle structure is formed by stacking a pressure sensor, a silver electrode and a temperature sensor in sequence from top to bottom. The temperature-sensitive material and the pressure-sensitive material in the dual-function sensor are both in a resistance response mechanism under stimulation, and signals are inevitably interfered. For the pressure sensor, the pressure sensor shows positive temperature coefficient response, and the response to the temperature is close to zero by adding a material with a negative temperature coefficient, so that the pressure sensor is insensitive to a temperature signal. For the temperature sensor, the pressure signal desensitization of the temperature sensor is realized through the preparation of an ultrathin temperature sensing film material and the design of a dual-function sensor stacking mode. By adjusting the sensor film to be sensitive to only one stimulus and negligible in response to the other stimulus, decoupling of temperature and pressure signals is achieved, the temperature and the pressure can be detected and distinguished at the same time, a resistance signal serves as a unique output signal, a complex signal processing and reading system is not needed, the preparation process is simple, and operability is high. And the manufactured sensor is high in sensitivity and is applied to the fields of wearable equipment, man-machine interaction, electronic skin, bionic robots and the like.

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 preparation and application of a self-repairing conductive hydrogel material based on a dynamic acylhydrazone bond and a hydrogen bond, and belongs to the field of flexible electronic materials.The preparation method comprises the steps that acrylamide serves as a monomer, a carbon-based material serves as a conductive filler, a hydrophobic monomer is combined, and a polymer network framework is prepared through a free radical polymerization method; the preparation method comprises the following steps: preparing natural polysaccharide, modifying and grafting the natural polysaccharide by adopting an oxidizing agent and a hydrazide modifier to obtain aldehyde polysaccharide and hydrazide polysaccharide, and introducing the aldehyde polysaccharide and the hydrazide polysaccharide into a polymer network skeleton to prepare the self-repairing conductive hydrogel based on a dynamic acylhydrazone bond and hydrogen bond network structure. The prepared self-repairing conductive hydrogel not only has the mechanical properties of high ionic conductivity and high fracture tensile strength, but also has the characteristics of good repairability, high sensitivity, stable electrical property and the like; the method is easy to operate, simple in step and suitable for a plurality of related fields such as wearable electronic equipment, flexible strain sensors and electronic skin.

The invention discloses an electronic skin implementation method and a physiological signal monitoring system. The electronic skin provided by the invention comprises a sensing platform and a plurality of sensing units arranged on the sensing platform, the sensing platform is of an island bridge structure and comprises a first material and a second material, the first material is a stretchable material, and the second material is a non-stretchable material; the sensing platform is prepared by carrying out silanization treatment on the second material and then adhering the second material with the first material; the sensing unit is arranged on the second material; the sensing unit comprises a sensitive film and an electrode, and the sensing unit is used for measuring temperature, humidity or oxygen. According to the embodiment of the invention, the stretchable sensor is realized through the sensing platform of the island bridge structure; signal measurement is carried out through the sensitive film, multi-target measurement can be achieved, the tensile property of the electronic skin is improved, and meanwhile convenient monitoring is achieved. The method can be widely applied to the technical field of signal measurement.