40 results about "Artificial limbs" patented technology

The invention relates to the technical field of artificial intelligence, and discloses an artificial limb driving method based on a spiking neural network, which comprises the following steps: acquiring a multi-modal signal, and preprocessing the multi-modal signal; converting the preprocessed multi-mode signal into a pulse signal; inputting the pulse signal into a pulse neural network for sensing fusion processing, and outputting a control strategy; dynamically adjusting a control strategy based on pulse reinforcement learning according to the behavior feedback information through a reward function, and generating a learning result; and generating a bionic motion instruction according to the adjusted control strategy and the learning result, and driving an artificial limb execution mechanism to act according to the bionic motion instruction. According to the method, the electromyographic signals, the tactile pressure signals and the inertial measurement data are uniformly coded into the pulse sequence, the pulse neural network is utilized to realize multi-modal sensing fusion, the pulse reinforcement learning algorithm is introduced, the artificial limb control strategy is optimized in real time according to user behavior feedback, and the accurate control of the artificial limb joint is improved.

The invention discloses an active pneumatic buffering ankle joint artificial limb system and a control method thereof. The system comprises a sensing module, a control module and a pneumatic execution module. The pneumatic execution module adopts a closed loop composed of a miniature diaphragm air pump, an air storage tank and a damping air bag, and pre-storage and quick release of high-pressure air are achieved through the air storage tank. The control method is based on multi-sensor data fusion, high-strength impact can be pre-judged before the heel touches the ground, and the rigidity of the damping air bag can be adjusted in advance. The problems that a traditional artificial limb buffering system is lagged in response and fixed in parameter and an active motor system is high in energy consumption are solved, low-power-consumption, fast-response and self-adaptive intelligent buffering is achieved, and the walking comfort and safety of an amputee are remarkably improved.

The invention discloses disabled old people walking assisting equipment with elastic buffering and active stretching and retracting functions, and belongs to the technical field of rehabilitation assisting instruments. The walking aid aims at solving the problems that existing walking aid equipment is complex in structure, unnatural in gait and difficult to maintain. The device comprises an artificial limb body, a standard socket, a fixing piece of the standard socket, a parallel spring mechanism, a power transmission unit and a sensing control system. The sensing control system judges the gait phase (standing phase / swinging phase) of the user in real time based on data fusion of the six-axis force sensor and the IMU. The power transmission unit drives the parallel spring mechanism to execute telescopic actions according to a control instruction, wherein the parallel spring mechanism actively stretches in a standing phase and provides elastic support to buffer impact, and actively contracts in a swinging phase and assists swinging through stored elastic potential energy. Through closed-loop control of sensing-decision-execution, organic cooperation of driving and buffering is achieved, the walking aid has the advantages of being compact in structure, adaptive to gaits, comfortable to wear and easy and convenient to maintain, and the walking aid safety, naturalness and energy efficiency of the disabled and the old are remarkably improved.

According to the silicon rubber artificial limb neck bush, the designed textile sleeve wraps the artificial limb neck bush body to protect the artificial limb neck bush body and prevent the artificial limb neck bush body from being scratched, the artificial limb neck bush body is made of silicon rubber and is soft and comfortable to use, and the bottom of the artificial limb neck bush body is provided with a plurality of ventilation holes for ventilation. The artificial limb neck bush main body can be communicated with outside air, and the inner part of the artificial limb neck bush main body is prevented from being stuffy. The artificial limb neck bush is simple in structure, good in use effect and capable of meeting use requirements and comprises an artificial limb neck bush body, the artificial limb neck bush body is made of silicon rubber, an arc face is arranged on the inner wall of the bottom end of the artificial limb neck bush body, and a textile sleeve is arranged on the outer side of the artificial limb neck bush body in a sleeving mode and used for protecting the artificial limb neck bush body. A plurality of ventilation holes for ventilation are formed in the bottom of the artificial limb neck bush main body, and an internal thread cylinder is arranged at the bottom of the artificial limb neck bush main body and used for being connected with a bolt.

The present application relates to a kind of functional tubular composite fabrics of heat and moisture transfer, including the core layer of high modulus and heat insulation by high modulus heat insulation rigid composite material and heat insulation thermal cotton;Highly elastic cladding layer is formed by continuous silica gel, spiral structure yarn that can be filled with liquid and gas;Transport layer of liquid is formed by waterproof and moisture-permeable porous membrane that is engraved with micropore on surface, water delivery hose, heat conducting film, heating wire;Waterproof and moisture-permeable skin layer is formed by elastic woven fabric layer, hydrophobic porous film layer and porous nonwoven fabric layer.The tubular composite fabric of the present application can be used to make warm body dummy artificial limb, such as warm body dummy arm, warm body dummy leg, etc., simple to make, when used as warm body dummy artificial limb, it is more convenient to test by partition, can be used for silk stockings, jumpsuit, socks, gloves, ice sleeve and other clothing comfort test.

The invention discloses a lightweight high-rigidity damping energy feedback type artificial limb foot plate for children, belongs to the technical field of artificial limbs, and aims to solve the problems that an existing artificial limb foot plate for children is poor in adaptability, limited in damping effect, insufficient in ventilation and moisture removal and poor in structural stability. The artificial limb foot plate comprises an artificial limb receiving cavity, an upper mounting base, a lower mounting base, a lower plate, an upper plate and a functional assembly, the artificial limb receiving cavity is detachably connected with the upper mounting base through a connecting assembly, the connecting assembly can adjust the mounting height, the upper mounting base and the lower mounting base are matched through a main rotating shaft, and a buffering assembly is arranged at the top of the lower mounting base to achieve damping springback. The extension length of the upper plate and the lower plate is adjusted through multiple sets of threaded mounting holes, the exhaust assembly at the bottom of the upper plate can exhaust damp and hot gas in the receiving cavity, the upper mounting base is provided with the clamping plate to fix the gas inlet pipe, and the structure is optimized through cooperation of multiple assemblies, the child growth requirement is met, the damping and ventilation performance is improved, and the service life is prolonged; the device is suitable for being worn by children with disabled limbs in daily life.

The utility model belongs to the technical field of safety prostheses, and particularly relates to a double-hydraulic elastic buckling safety prosthetic knee joint which comprises a supporting body, a joint connector and a hydraulic sleeve, the joint connector is arranged at the lower end of the supporting body, and the hydraulic sleeve is arranged at the side end of the supporting body. Through the arrangement of the bent connecting frame, the supporting shaft, the pressure stabilizing connecting mechanism, the spring and the displacement telescopic column, the bent connecting frame and the knee joint protection shell at the front end rotate through the supporting of the supporting shaft and move under the driving of the hydraulic sleeve; the bending connecting frame pulls the pressure stabilizing connecting mechanism through the positioning column, the displacement telescopic column is promoted to move in the pressure stabilizing connecting mechanism, meanwhile, the spring connected to the side end of the pressure stabilizing connecting mechanism is stretched, and when the knee joint bends, the pressure stabilizing connecting mechanism connected with the bending connecting frame gets close to the other side, so that the knee joint is bent. And the displacement telescopic column slides in the pressure stabilizing connecting mechanism, and meanwhile, the spring rebounds and resets.

The application relates to the technical field of rubber, and discloses a carbon fiber-silicone rubber composite material, a preparation process and application in artificial limbs. The carbon fiber-silicone rubber composite material comprises 100 parts by weight of methyl vinyl silicone rubber, 3-5 parts by weight of a vulcanizing agent, 10-25 parts by weight of ABS resin, 3-6 parts by weight of carbon fiber and 0.8-2 parts by weight of a siloxane styrene-acrylonitrile copolymer. The siloxane styrene-acrylonitrile copolymer functions as a compatilizer, improves the compatibility between the ABS and the methyl vinyl silicone rubber, makes the composite material have better mechanical properties, shows higher tensile strength, elongation at break and tear strength, and the obtained silicone rubber composite material has better practical application in materials such as artificial limbs.

The application provides a self-adaptive motion cooperative underactuated variable-damping bionic manipulator and robot in the technical field of bionic artificial limb and robot, which comprises a palm plate, a damping screw rod transmission pair, a finger, a motor, a gear transmission pair and a bevel gear transmission pair, the finger is connected with the damping screw rod transmission pair, the damping screw rod transmission pair is connected with the gear transmission pair, the gear transmission pair is connected with the bevel gear transmission pair, the bevel gear transmission pair is connected with one motor, and the damping screw rod transmission pair, the motor, the gear transmission pair and the bevel gear transmission pair are connected with the palm plate respectively; the motor drives the bevel gear transmission pair to rotate, the bevel gear transmission pair drives the gear transmission pair to rotate, and the damping screw rod transmission pair drives the finger to do push-pull motion through the gear transmission pair. The application realizes the control of multi-finger parallel cooperative motion freedom under single driving force input, effectively improves the compliant grasping of the manipulator to objects with different shapes and the energy utilization efficiency, and widens the multi-target application scene of the manipulator.

The utility model relates to the technical field of artificial limb equipment, and discloses a carbon fiber hydraulic energy storage foot device for an artificial limb, which comprises a bottom plate and a hydraulic cylinder, a carbon fiber connecting piece is arranged at the top of the bottom plate, when the hydraulic cylinder is installed, an inserting end at one end of the hydraulic cylinder can be inserted into an inserting groove in a butt joint block, and the butt joint block is inserted into the carbon fiber connecting piece. A sliding block rotationally installed at the other end of the hydraulic cylinder slides in along a sliding groove of the bottom plate, after the sliding block slides to a proper position to complete adjustment of the angle of the hydraulic cylinder, a bolt is tightened to drive a movable locking block to move towards the sliding block, and meanwhile clamping teeth on the movable locking block are clamped into tooth grooves in the bottom of the bottom plate; according to the technical scheme, locking and positioning of the sliding block are achieved, so that installation of the hydraulic cylinder is completed, on the contrary, the hydraulic cylinder can be detached, the overall operation is simple and rapid, the hydraulic cylinder of the artificial limb can be replaced according to the needs of a user, the angle between the artificial limb and the bottom plate is adjusted, and the comfort of the user is improved.

The invention discloses an exoskeleton robot or active power artificial limb joint angle prediction device and method. According to the method, electromyographic signals carrying neural information and inertial motion unit data carrying kinematics information are fused, information transmitted by spinal nerve and speed information in multi-modal data are utilized, and feature fusion and decoding are carried out; finally, the output is used for controlling intelligent rehabilitation equipment such as a lower limb exoskeleton robot and an active artificial limb. According to the method, the speed adaptability of the existing lower limb motion angle prediction based on the human body surface electromyogram signals is remarkably improved, and the engineering practical performance of the method is remarkably improved.

The present application relates to the field of bionic artificial limbs and robotics, and particularly relates to a modular intelligent upper limb artificial limb and a system thereof, which comprises a socket assembly, a main skeleton connected with the socket assembly, a main control module installed on the main skeleton, a battery module for supplying power to the main control module, and at least one end execution module; the main skeleton is provided with at least one standard interface slot, a locking structure and a first electrical contact group are arranged in the standard interface slot, the end execution module is provided with a module shell, the module shell is provided with an elastic locking part, the end execution module can be inserted into the standard interface slot, and assembly positioning is realized by cooperation of the elastic locking part and the locking structure, and meanwhile, the two electrical contact groups are in contact with each other to form electrical connection. In the present application, when the end execution module is inserted into the standard interface slot, the elastic locking structure is fixed, the electrical contact groups are automatically connected and conducted, mechanical locking and electrical connection are completed synchronously, and the problems of step-by-step operation for disassembly and assembly of traditional artificial limbs and inability of users to replace modules by themselves are solved.

The invention discloses a body feeling myoelectricity artificial hand system fusing myoelectricity enhanced decoding and bionic electrical stimulation feedback. The system comprises a myoelectricity bracelet, a main controller, an electrical stimulator and an artificial hand. According to the system, an electromyographic bracelet is used for collecting residual limb side electromyographic signals, a main controller removes electrical stimulation artifacts in the signals in real time through a comb filtering and self-adaptive filtering series algorithm, gesture intentions are recognized online through a self-updating multi-class LDA algorithm, and the prosthetic hand is driven to execute corresponding actions. According to the system, a closed-loop feedback mechanism based on a muscle shuttle sensing model is constructed, the muscle shuttle sensing model simulates neural coding characteristics of a human body muscle shuttle, the real-time stroke of a micro servo electric cylinder of the prosthetic hand and stress information of a torque sensor are mapped into electrical stimulation frequency and voltage parameters respectively, and an electrical stimulator is controlled to apply bionic stimulation to the stump. According to the invention, closed-loop control of myoelectricity intention recognition, artificial limb action execution, state detection and electrical stimulation feedback is realized, the problems of lack of sensory feedback, serious electrical stimulation signal interference and the like of the existing myoelectricity artificial limb are effectively solved, a patient is helped to reconstruct ontology perception, and the accuracy and naturalness of artificial limb control are improved.

The invention discloses a self-adaptive brain control artificial limb method based on space-time diagram decoding and online reinforcement learning. The method comprises the steps that S1, electroencephalogram time sequence data collected through a multi-channel electroencephalogram electrode are obtained; s2, constructing an electroencephalogram spatial-temporal feature map corresponding to the target angle sequence according to the electroencephalogram time sequence data; s3, constructing a space-time diagram convolutional network model; s4, taking the electroencephalogram spatial-temporal feature map as an input feature, taking the target angle sequence as a feature tag, and performing model training on the constructed spatial-temporal map convolutional network model to obtain an optimal spatial-temporal map convolutional network model; and S5, constructing a reinforcement learning model, and realizing adaptive control of the brain-controlled intelligent artificial limb according to the output of the optimal space-time diagram convolutional network model. The problem that according to an existing method, control is simplified into discrete instruction classification, and a continuous and fine movement track cannot be generated is solved. Meanwhile, the spatial topological characteristics of the electroencephalogram signals are not sufficiently utilized, and the self-adaptive capability depends on heavy manual calibration.

The invention discloses an anthropomorphic joint system of multi-dimensional magnetic suspension and electromagnetic gradual change force control and telescopic bionic muscle tendons and a control method, and belongs to the technical field of bionic robots, intelligent mechanical joints and electromagnetic control. The technical problems that an existing robot joint is serious in mechanical abrasion, stiff in movement, poor in stability, low in bionic degree, rough in force control effect and the like are solved. The system comprises a multi-dimensional magnetic suspension normal-state stable supporting module, a telescopic bionic muscle tendon module, a multi-unit vector electromagnetic cooperative driving module, an electromagnetic polarity smooth switching and bidirectional driving module and a bionic self-learning gradual change type force control module. Non-contact and wear-free operation of the joints is achieved through multi-dimensional magnetic suspension, anthropomorphic movement is achieved through telescopic bionic muscle tendons, and precise and flexible control is achieved through vector electromagnetism and gradual change force control. The invention has the advantages of zero wear, long service life, multidimensional stability, high humanoid degree, soft force control, simple structure and the like, and is suitable for the fields of humanoid robots, medical rehabilitation robots, intelligent prostheses, humanoid interaction equipment and the like.

An electromyography (EMG) strap and a wearable electronic device are provided. The EMG strap includes a flexible strap body; a flexible printed circuit board (FPCB), housed within the flexible strap body; a surface electromyography (sEMG) sensor assembly, disposed on the FPCB, where the sEMG sensor assembly is exposed from the flexible strap body and is configured to collect an EMG signal and pre-process the EMG signal to obtain a pre-processed analog signal; and a board-to-board (BTB) connector, disposed on the FPCB and electrically connected to the sEMG sensor assembly. The EMG strap can not only help in diagnosing conditions like muscular dystrophy and motor neuron disease but also play a pivotal role in developing advanced prosthetic devices that respond to muscle signals.

The invention belongs to the technical field of medical instruments, and discloses an artificial limb control system and control method for driving a knee joint by a hip joint, and the control system comprises a hip joint curvature acquisition module, a wireless data transmission module, a knee joint driving device and a battery module, the hip joint curvature acquisition module is used for acquiring a bending angle signal of a hip joint in real time, the wireless data transmission module is used for wirelessly transmitting the hip joint angle signal, and the knee joint driving device is used for receiving the hip joint angle signal transmitted by the wireless data transmission module and controlling the movement of the knee joint according to a preset biomechanical model. The knee joint driving device is used for executing a control instruction sent by the knee joint driving device and driving the knee joint to move, and the battery module supplies power to other assemblies. Hip joint angle signals are collected in real time and wirelessly transmitted through the hip joint curvature acquisition module, knee joints are directly driven to move, signal instability and response lag are avoided, control precision and comfort are improved, and the service life of a battery is prolonged.

The application belongs to the technical field of bionic skin material preparation, and specifically provides a TPE water-based polyurethane type bionic robot skin material and a preparation method thereof. The bionic skin material is composed of a water-based polyurethane synthetic leather skin layer, a thermoplastic elastomer TPE layer (foamed TPE layer) and a heating film. The epidermal water-based polyurethane material provides a baby skin touch, the middle layer TPE provides a soft and elastic meat feeling, and the lowermost layer heating film can endow the bionic skin material with a warm feeling. The bionic skin material preparation method of the application adopts a hot pressing process, solves the difficulty that the TPE surface energy is low and cannot be glued, and does not change the soft and elastic hand feeling of the TPE; the hot-pressed water-based polyurethane synthetic leather solves the problems that the traditional TPE material is prone to oil penetration and has an odor; the middle layer can adopt foamed TPE, and the lightweight function of the material can be realized; and the bionic skin material has a wide application prospect in the fields of artificial skin, soft robot, wearable device, soft toy and artificial limb skin, etc.

The invention relates to an artificial limb protection plate knee joint collapse prevention device which is characterized in that bases are arranged on the two sides of an artificial limb knee joint respectively, each base is provided with two sliding grooves, each sliding groove is connected with a branch in a sliding mode, and the bottom ends of the two branches are connected with a connecting rod; the front and rear ends of the folding soft shell are respectively connected with the top ends of the four branches; the switch sliding block is connected with the connecting rod, and the switch sliding block is pushed to drag the branch to slide along the sliding groove through the connecting rod, so that the folding soft shell is folded or unfolded. The upper part of the connecting seat is connected with the two bases, and the lower part is connected with the artificial limb shank. According to the device, a folding structure is designed at the concave part of the knee joint between the artificial limb protection plate and the receiving cavity, so that the folding soft shell is unfolded and folded, the concave part is quickly filled, the problem that the knee joint collapses after a lower limb artificial limb wearer sits down is solved, and the wearing attractiveness of the lower limb artificial limb is improved.

The utility model discloses a four-connecting-rod hydraulic knee joint, which relates to the technical field of artificial limb knee joints, and comprises a fixed frame and a protective frame, the protective frame is fixedly connected to the top of the fixed frame, and the top of the protective frame is fixedly connected with a hollow block. The limiting frame, the threaded rod, the transmission gear, the connecting gear, the rack, the sliding rod, the connecting rod and other assemblies are driven to be matched with one another through the rotating force of the fixing shaft, the grab handle fixed to the circumferential face of the fixing shaft is rotated, and therefore the grab handle is driven to rotate, and meanwhile the transmission gear fixed to the circumferential face of the fixing shaft is driven to rotate; the transmission gear enables the connecting gears meshed with each other to be stressed and drives the threaded rod in threaded connection with the interior of the threaded hole to rotate at the same time, when the threaded rod rotates, the limiting frames deform and get close to each other, and when the patient uses the artificial limb knee joint, the legs of the patient are limited and prevented from shaking, so that the experience feeling of the patient is improved.

The utility model relates to a half-toe carbon fiber foot plate which comprises an upper foot plate, a lower foot plate, an artificial limb connector, a connecting device and a half-toe structure. The upper foot plate and the lower foot plate are fixedly connected through a connecting device; the head ends of the upper foot plate and the lower foot plate and the tail end of the lower foot plate are respectively provided with a half toe separating structure; the artificial limb connector is fixedly connected to the top of the upper foot plate through a fastener; the artificial limb connector comprises a rectangular pyramid, a ring seat, a carbon fiber mold pressing head and a threaded insert which are sequentially arranged from top to bottom; the utility model has the advantages that the full-foot-length sole design and the tow connecting device are adopted, so that better rolling performance can be provided in the walking process, the half-toe structure can better walk on a rugged road surface, and better walking experience is provided for a user; and the weight of the sole product is further reduced through the design of the molded artificial limb connector taking the non-metal carbon fiber as the main body, so that the burden of the stump of the user is reduced, and the stump of the user is better protected.

The application discloses a flexible sensor with pressure and humidity sensing functions and a preparation method thereof, and relates to the technical field of flexible electronics and sensor devices, and comprises, from top to bottom, a microporous moisture-permeable protective layer, a dual-mode composite sensing layer, a pressure-sensitive microstructure layer, an elastomer protective layer and a film packaging layer, the dual-mode composite sensing layer comprises a humidity sensing layer, a film substrate and a pressure sensing electrode layer, the humidity sensing layer is arranged on one side of the film substrate, the pressure sensing electrode layer is arranged on the other side of the film substrate, the pressure sensing electrode layer is oppositely attached to the fingerprint-imitating microstructure of the pressure-sensitive microstructure layer, the pressure-sensitive microstructure layer is arranged in a notch of the elastomer protective layer, and the film packaging layer covers the pressure-sensitive microstructure layer and the elastomer protective layer. The flexible sensor provided by the application can efficiently sense pressure and humidity, and has a wide application prospect in the fields of robot interaction, intelligent artificial limbs and the like.

An auxiliary device for rehabilitation nursing of an artificial limb patient comprises a main upper arm fixing sleeve and a main front arm fixing sleeve, the main upper arm fixing sleeve and the main front arm fixing sleeve are rotationally connected through a rotating structure, the main upper arm fixing sleeve is connected with an auxiliary upper arm fixing sleeve through a telescopic plate, and the main front arm fixing sleeve is connected with an auxiliary front arm fixing sleeve through a telescopic plate. A telescopic plate is fixed to the front side face of the auxiliary upper arm fixing sleeve in a penetrating mode, one end of the telescopic plate is inserted into a telescopic inserting groove in the side wall of the front side of the main upper arm fixing sleeve, and a sliding locking block used for fixing the telescopic plate of the auxiliary upper arm fixing sleeve is arranged on the side wall of the front side of the main upper arm fixing sleeve. And a telescopic plate fixed by the auxiliary front arm fixing sleeve is inserted into a telescopic slot in the side wall of the front side of the main front arm fixing sleeve. The utility model can better adapt to the characteristics of the arm of a user, and plays a good role in supporting, stabilizing, fixing and protecting, preventing and correcting deformity, inhibiting spasm and reducing axial load bearing.

The invention belongs to the technical field of flexible electronic devices, and particularly relates to a strain-insensitive flexible transparent stretchable temperature sensor and a preparation method and application thereof. The sensor is of a sandwich structure and comprises flexible transparent stretchable electrodes on the two sides and a transparent ionic gel electrolyte layer clamped between the flexible transparent stretchable electrodes. The electrode is an AgNWs / MXene / AgNWs sandwich structure composite electrode which is constructed on a pre-stretched PDMS (Polydimethylsiloxane) elastic substrate and has a wrinkle structure; and the electrolyte layer is a PAT ionic gel layer. The MXene material is introduced to regulate and control the surface potential of the electrode, and the constructed folded electrode structure is utilized to effectively release the strain, so that the sensor has the characteristics of high temperature sensitivity and excellent strain insensitivity, and meanwhile, the sensor has a wide working temperature range, high optical transparency and a stable electrode-electrolyte interface; the method can be widely applied to the fields of human health monitoring, intelligent artificial limb interaction, temperature sensing arrays and the like.

The invention discloses a self-adaptive cooperative control method and system for a knee joint of an artificial limb and the artificial limb, and belongs to the field of intelligent rehabilitation equipment control. The method comprises the steps that plantar pressure distribution signals are collected, and preferably knee joint angle signals are also collected; identifying a fine gait sub-phase and a user high-level motion intention based on the signal; according to an identification result, performing joint query in a pre-stored multi-dimensional optimization mapping table to obtain matched driving control quantity and damping control quantity; and in the same control period, the two are synchronously output to the driving unit and the damping unit to cooperatively control the knee joint movement. The corresponding system comprises an information perception fusion module, an intelligent identification decision module and a synchronous driving execution module. Through collaborative decision and synchronous control of driving and damping, dynamic adaptive optimization of motion characteristics of the knee joint of the artificial limb is realized, and gait naturalness and environmental adaptability are improved.

The invention discloses a soft tactile sensor capable of simultaneously identifying materials and rigidity. The soft tactile sensor comprises a flexible tactile sensing layer; wherein the flexible tactile sensing layer is configured to realize synchronous identification of rigidity and material types through an electrochemical potential difference between contact interfaces; a shield electrode layer; an elastomeric cone layer; wherein the elastic body cone layer is composed of an elastic body cone array with different elastic moduli, the elastic body cones located in the center area have low elastic moduli, the elastic body cones located in the peripheral area have relatively high elastic moduli, and therefore differential deformation responses are generated when the elastic body cone layer makes contact with objects with different hardness; and the bottom electrode layer, the electrode shielding layer, the elastomer cone layer and the flexible touch sensing layer are aligned and bonded layer by layer. The method has flexibility, high sensitivity and extensible signal recognition capability, can be widely applied to the fields of industrial robots, self-adaptive prostheses, surgical auxiliary gloves, flexible electronic skins and the like, and has remarkable interdisciplinary application value and technical popularization potential.

The invention discloses a surface electromyogram signal gesture recognition method and system based on a multi-feature fusion domain generalization attention network, and belongs to the technical field of bioelectricity signal recognition. According to the method, multi-channel surface electromyogram signals are collected under different arm posture conditions, and after band-pass and band-stop filtering, time domain and frequency domain features are extracted and combined into a multi-channel feature matrix; and inputting the feature matrix into a multi-feature fusion domain generalization attention network model MFDGAN, dynamically generating network parameters by the model by using a meta adjuster, introducing an attention mechanism to establish a global dependency relationship, further obtaining advanced features through convolution fusion, and finally outputting gesture category probability distribution. According to the method, under the condition that target domain data is not needed, the generalization ability of cross-posture and cross-user is remarkably improved, the influence of the number of electrodes on the recognition precision is reduced, and the method can be widely applied to scenes such as artificial limb control, man-machine interaction and rehabilitation medical treatment.

This invention discloses a real-time fusion and control method for multi-channel bioelectrical signals based on embedded AI, relating to the fields of bioelectrical signal processing, embedded artificial intelligence, and intelligent rehabilitation assistive devices. It acquires forearm electromyography (EMG) signals through six-channel electrodes, and after filtering, rectification, downsampling, and standardization preprocessing, performs short-time Fourier transform at the end-user to generate a time-frequency spectrogram. The spectrogram is input into a lightweight multi-scale CNN model built on the MindSpore framework, outputting a gesture prediction sequence. A sliding window majority voting algorithm is used for temporal post-processing to filter out false positives, outputting stable control commands to drive the bionic robotic hand to perform actions. Incremental fine-tuning is performed through the ModelArts platform, and the optimized model is deployed to the end-user via OTA for continuous evolution. This invention is based on fully domestically produced hardware and software, with an end-to-end latency of ≤35ms and a recognition accuracy of 87.24%. It possesses high real-time performance, robustness, and personalized adaptability, and can be widely applied in fields such as intelligent prostheses and rehabilitation assistive devices.

The invention discloses a silica gel electronic skin and a preparation method thereof, the silica gel electronic skin is cured and formed by immersing intelligent fibers into a silica gel prepolymer solution, and the intelligent fibers are elastic fiber membranes with the surfaces modified by functional materials. The elastic fiber membrane can realize high-precision sensor patterning arrangement, so that the problem of insufficient precision when the sensor is directly processed on the silica gel substrate is avoided; the tensile stress applied by the outside can be effectively borne and dispersed, the local stress concentration of the silica gel matrix is reduced, the overall strength and toughness of the material are improved, the interface bonding performance is good, the stress is transmitted through the interface shearing effect in the tensile process, the elongation at break and the tear resistance of the material are further improved, and the service life of the material is prolonged. Four limbs and arms can be better wrapped, and the artificial skin can be applied to robot skin, artificial limbs, wearable equipment and skin transplantation.