2631 results about "Flexible electronics" 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 provides a flexible electronic device multi-physics field coupling performance simulation analysis method, and relates to the technical field of flexible electronics. Firstly, a geometric model of the flexible electronic device is constructed; the geometric model comprises a three-layer assembly structure of an electronic chip, an adhesive layer and a flexible PCB layer, and an interconnection structure; setting electromagnetic-thermal-mechanical field coupling parameters of the geometric model; then, grid division is conducted on the geometric model through a finite element method, and the grid division precision of the area where the interconnection structure is located is higher than that of other areas; building a multi-physics field coupling model according to the geometric model and set coupling parameters; applying load and boundary conditions to the model, wherein the load and boundary conditions comprise a current source, a heat generation load, a convection heat dissipation boundary condition and a mechanical constraint condition; and simulating the working state of the flexible electronic device under the action of multi-physics field coupling in the multi-physics field coupling model to obtain a simulation result. According to the method, the performance and the failure mechanism of the flexible electronic device under the multi-physics field coupling effect can be effectively predicted.

The invention discloses a flexible circuit board made of weldable low-temperature silver paste and a preparation process of the flexible circuit board, and relates to the technical field of flexible electronic device manufacturing, and the flexible circuit board comprises a base material layer, a low-temperature weldable silver paste conductive layer and a protective layer. According to the invention, the collaborative design of the weldable low-temperature silver paste and the self-repairing protection layer is integrated, the efficient preparation of the flexible circuit board is realized through the printing technology, the weldable low-temperature silver paste breaks through the traditional high-temperature limitation, supports a wide range of substrates and can be directly welded without surface treatment, and in addition, the polyurethane protection layer containing the dynamic disulfide bond has a self-repairing function. Compared with a traditional FPC, only two core processes of printing and baking are needed, the process is greatly simplified, the equipment investment is reduced, and double reduction of the manufacturing cost and the material cost is achieved.

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.

Aspects of the present disclosure are directed to intravascular electrophysiology catheters which utilize electrodes on flexible electronic circuit(s) to facilitate reduced assembly complexity and cost. In one example embodiment, a distal tip assembly of an electrophysiology catheter is disclosed. The distal tip assembly including a catheter shaft, flexible circuitry, and a distal tip coupled to a distal end of the catheter shaft. The catheter shaft includes an outer surface with a trench extending into the outer surface, and the flexible circuitry is inserted into the trench and coupled to the catheter shaft. The flexible circuitry includes one or more electrodes configured and arranged to sense electrophysiological characteristics of tissue.

Aspects of the present disclosure are directed to intravascular electrophysiology catheters which utilize electrodes on flexible electronic circuit(s) to facilitate reduced assembly complexity and cost. In one example embodiment, a distal tip assembly of an electrophysiology catheter is disclosed. The distal tip assembly including a catheter shaft, flexible circuitry, and a distal tip coupled to a distal end of the catheter shaft. The catheter shaft includes an outer surface with a trench extending into the outer surface, and the flexible circuitry is inserted into the trench and coupled to the catheter shaft. The flexible circuitry includes one or more electrodes configured and arranged to sense electrophysiological characteristics of tissue.

The invention provides a large-area split type flexible magnetic tactile sensor with a sensing function, and the sensor employs a plurality of flexible square magnetic sheets which are magnetized in the thickness direction, and the polarities of the flexible square magnetic sheets are alternately arranged in a checkerboard array mode in which the polarities of the magnetic fields of the adjacent flexible square magnetic sheets are opposite, so as to simulate a flexible magnetic film which is magnetized in a folded manner. The magnetic flux density of a contact force acquisition area is enhanced, a U-net algorithm is adopted to carry out field intensity-force relation fitting on the divided acquisition area, and a contact force cloud picture is generated, so that a Hall sensor and a flexible magnetic film can keep a large distance to carry out split type large-area contact force sensing, and lossless split type installation is realized; and compared with simple magnetic field modes such as unidirectional magnetization, the touch sensor has higher sensitivity. According to the size of a required contact force measuring surface, more flexible magnetic touch sensor arrays are arranged, a contact force cloud picture is drawn together through a plurality of units, and the flexible magnetic touch sensor array has application potential in the fields of bionic robots, flexible electronics, medical treatment and the like.

The invention discloses a polyurethane composite material embedded with a liquid repair network and a preparation method thereof, and belongs to the technical field of high polymer materials, the polyurethane composite material comprises 40-60 parts of a polyurethane prepolymer, 5-20 parts of repair agent carrier particles, 10-30 parts of a liquid repair agent and 0.1-1 part of a dispersant. The composite material provided by the invention solves the problems that a polyurethane material is easy to damage and low in repair efficiency in long-term use. The composite material disclosed by the invention has rapid, efficient and self-adaptive repairing performance under large-scale damage and multiple damage, is suitable for complex environments such as acid-base and high temperature, and has important application prospects in the fields of various industrial equipment, flexible electronic equipment, automobiles, buildings and the like.

The invention discloses a hot-pressing control method and system for a flexible circuit board, and particularly relates to the technical field of flexible electronic manufacturing process control, and the method comprises the following steps: calculating a heat conduction equilibrium coefficient through collecting the temperature and heat flux density data of each region in the flexible circuit board, and achieving the real-time evaluation of a heat diffusion characteristic; in combination with an infrared scanning mode, acquiring reflectivity data, analyzing dynamic change of the reflectivity data along with time, and identifying an abnormal region in which coating residues possibly exist; further comparing the position relationship between the thermal diffusion anomaly and the infrared reflection anomaly, screening a space overlapping region as a high-risk point, and executing a preset regulation and control strategy; according to the method, the heat conduction equilibrium coefficient is calculated by collecting heat flow and temperature data, the coating residue abnormal area is recognized by combining infrared reflectivity time sequence characteristics, the high-risk area is screened based on the space overlap ratio for dynamic regulation and control, accurate recognition, differential control and closed-loop optimization of hot pressing defects are achieved, and the hot pressing quality and consistency are improved.

The invention provides a polyvinylidene fluoride-based nanofiber yarn wave-absorbing fabric as well as a preparation method and application thereof, and belongs to the technical field of preparation of wave-absorbing composite materials. The preparation method comprises the following steps: preparing nanofiber yarns or nanofiber core-spun yarns by adopting a conjugate electrostatic spinning technology, directly adding a conductive substance into a spinning solution to form conductive nanofibers, and further coating the nanofiber yarns or the nanofiber core-spun yarns with a PDA shell layer to improve the wear resistance and reduce silver nanoparticles in situ; finally, the yarns are woven into fabric through a weaving or knitting technology, and the fabric is applied to the fields of buildings, electromagnetic protective clothing, flexible electronics and the like. Compared with an existing microwave absorbing material, the fabric-based material is light in weight and good in mechanical flexibility and processability. Fabrics formed of nanofiber yarns or nanofiber core spun yarns facilitate the induction of interfacial polarization and multiple reflections, and can deeply design material properties. The material provided by the invention has better wear resistance, wearability and microwave absorption performance, and is suitable for actual production and application.

The invention relates to the technical field of flexible materials, in particular to a preparation method of a stretchable wire based on a laser in-situ activated liquid metal composite material. According to the method, firstly, liquid metal is subjected to ultrasonic treatment to obtain liquid metal particles, then the liquid metal particles are fully mixed with a solution of an elastic polymer SEBS to prepare printing ink, then a stretchable wire pattern is prepared by means of the printing ink in combination with laser cutting and laser in-situ activation technologies, and finally, the stretchable wire is prepared through transferring and packaging. According to the method, two self-healing materials, namely liquid metal and SEBS, are utilized to form the composite material, and a technology for activating the liquid metal composite material in situ through laser scanning is provided, so that the defects in the prior art are overcome, and the requirements of flexible electronic devices on stretchable wires are met.

The embodiment of the invention provides an emergency data quality control analysis method and device based on big data. Wherein a microcirculation dynamic mapping model with time-space correlation is constructed and integrated through a nanofiber sensing array of the flexible electronic skin device. And performing time reference synchronous compensation and space coordinate transformation mapping on the model and spatio-temporal data of emergency treatment monitoring equipment to form a fusion data field, thereby realizing joint feature distribution of microcirculation parameters and emergency treatment parameters. The fused data field is subjected to mode coupling verification with a microcirculation compensation track map in a shock compensation mode feature library through a dynamic quality control engine, and when it is detected that mode mismatching exists between a parameter evolution path and a historical track, space-time signal fragments are reconstructed based on phase features and space distortion features; and generating a quality control report associated with the abnormal skin perfusion gradient node. According to the technical scheme provided by the embodiment of the invention, the quality control effect of the emergency data of the shock patient is improved.

The invention belongs to the field of conductive films, and discloses a preparation method of a conductive film based on PEDOT: PSS and silver nanowires, and the preparation method specifically comprises the following steps: after carrying out surface hydroxylation treatment on the silver nanowires AgNWs, under the action of a silane coupling agent 3-(trimethoxymethylsilyl) propyl methacrylate TMSPMA, mixing the silver nanowires AgNWs with PEDOT: PSS to prepare a PEDOT: PSS / AgNWs base solution; the preparation method comprises the following steps: adjusting the pH value of a base solution to be nearly neutral through sodium citrate, then mixing the base solution with a PEA emulsion, carrying out spin coating to form a film, and finally, carrying out ultrafast laser treatment to improve the conductivity so as to obtain the conductive film based on PEDOT: PSS and silver nanowires. The conductive film provided by the invention has high conductivity (gt; 1200 S / cm), good stability and excellent mechanical properties, and is suitable for a flexible electronic device and stable work in a certain humidity environment.

The invention discloses photocuring conductive hydrogel as well as a preparation method and application thereof. According to the invention, methacryloylethyl sulfobetaine (SBMA), acrylic acid (AA) and hydroxyethyl methylacrylate (HEMA) are used as comonomers, deionized water is used as a solvent, N, N '-methylenebisacrylamide (MBAA) is used as a cross-linking agent, ammonium persulfate (APS) is used as an initiator, tetramethylethylenediamine (TEMED) is used as an accelerator, and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methyl propiophenone (Irgacure2959) is used as a photoinitiator; the conductivity is improved by adding an ionic compound potassium chloride (KCl), and the photocuring conductive hydrogel is prepared in a free radical polymerization manner by adopting an LED-UV curing box. The conductive hydrogel disclosed by the invention has the characteristics of good adhesion property, conductivity, mechanical property and the like, and has wide application in the fields of wearable strain sensors and other flexible electronics.

The invention provides a preparation method of n-p type ionic thermoelectric hydrogel based on a bi-crosslinked network structure. The preparation method comprises the following steps: (1) dissolving a binary hydrogel substrate in water according to a certain proportion; (2) adding a cross-linking agent; (3) dropwise adding the stirred solution into a mold, and carrying out curing molding and drying at a certain temperature; and (4) soaking the cured hydrogel in an n-type ion solution and a p-type ion solution with a certain concentration respectively, and after a period of time, assembling the hydrogel to obtain the n-p type ion thermoelectric hydrogel based on the double-crosslinked network structure. Different from thermoelectric hydrogel which only has a network structure and only uses one thermoelectric type, the technical scheme designs the thermoelectric hydrogel initiated by n-p type ions based on a double-crosslinking network structure, so that more efficient and more stable energy conversion and utilization can be realized; and a new solution is provided for the fields of flexible electronic equipment, low-grade heat energy recovery and the like.

The invention provides loofah sponge nanocellulose hydrogel and a preparation method thereof.The preparation method comprises the following steps that anhydrous citric acid, choline chloride and water are mixed to react, and a ternary eutectic solvent is obtained; dispersing loofah sponge purified cellulose in a ternary eutectic solvent, washing and filtering a product to be neutral, dispersing the product in water, and performing ultrasonic treatment to obtain loofah sponge nanocellulose turbid liquid; dissolving sodium lignin sulfonate and lithium chloride in a sodium hydroxide solution to obtain a precursor solution; mixing the loofah sponge nanocellulose suspension with water, polyacrylamide, ammonium persulfate and N, N-methylene bisacrylamide, pouring the precursor solution into the loofah sponge nanocellulose suspension, uniformly stirring the mixture, pouring the mixture into a mold, and sealing the mold; and forming to obtain the loofah sponge nanocellulose hydrogel. The invention also provides an application of the hydrogel. The hydrogel disclosed by the invention has excellent biocompatibility, mechanical property and conductivity, has a wide application prospect in the field of flexible electronics, and is simple in preparation process, low in cost, green and environment-friendly.

The present invention relates to the technical field of flexible electronics, and relates to a breathable and stretchable circuit capable of being activated by imprinting, and a preparation method therefor and a use thereof. The preparation method for the breathable and stretchable circuit capable of being activated by imprinting in the present invention comprises the following steps: dissolving a thermoplastic polymer in a solvent, adding liquid metal particles, and mixing and dispersing to obtain a mixed solution; carrying out electrospinning on the obtained mixed solution to prepare a nanofiber membrane; and using a stamping model having a circuit pattern to stamp the obtained nanofiber membrane so as to obtain the breathable and stretchable circuit capable of being activated by imprinting. The present invention ensures the breathability and the stretchability by using the nanofiber membrane. The liquid metal particles match fibers in diameter, and therefore, liquid metal in nanofibers can be overflowed by means of imprinting to form a conductive path, achieving high-precision preparation of circuits.

The invention relates to a composite fiber membrane, an electromagnetic wave sensing and shielding driver and application thereof, and provides a fiber-based composite membrane which has photo-thermal and moisture stimulation deformation and electromagnetic wave sensing and shielding functions. The composite fiber membrane has the advantages of light weight, flexibility, high machinability and the like, and has wide application prospects in the fields of electromagnetic wave shielding, electromagnetic wave sensing, flexible electronic equipment, intelligent wearable equipment, soft robots and the like.

The invention discloses a flexible heat-conducting composite material with chain-shaped boron nitride and a preparation method, and belongs to the technical field of flexible electronic device heat management materials, the flexible heat-conducting composite material comprises an elastomer matrix and a magnetic functionalized boron nitride filler filled in the elastomer matrix; the elastomer matrix is polydimethylsiloxane; the magnetic functionalized boron nitride filler is prepared by modifying Fe3O4 nanoparticles on the surface of a boron nitride sheet; the boron nitride sheets form a vertically arranged chain structure in the elastomer matrix. The chained vertical arrangement of the boron nitride sheets is realized by prolonging the magnetic field treatment time, the Fe3O4 modification quantity is controlled to optimize the balance between the magnetic responsiveness and the heat-conducting property, a chained heat-conducting network connected end to end is formed, and the thermal seepage threshold value is reduced. According to the flexible composite material and the preparation method thereof, boron nitride sheets are induced to be vertically arranged through a magnetic field to form a chain-shaped heat-conducting network, so that high heat conductivity under low filler loading capacity is realized, and excellent stretchability is kept at the same time.

To make electronic payments more flexible. [Solution] An application program that operates on a user's terminal device and works in cooperation with a payment server to provide electronic payment services to the user, the application program causing, when the state of the payment server is in a normal first state, for the purpose of displaying an online code image generated using a one-time code obtained by communication from the payment server on the display unit of the terminal device, and when the state of the payment server is in an abnormal second state, for the purpose of generating an offline code image using an offline key obtained from the payment server less frequently than the one-time code, and displaying the offline code image on the display unit of the terminal device.

A method for forming a nanomaterial coating through solute-assisted assembly is provided. The method includes steps of: providing a mixture comprising a solvent, a solute, and a nanomaterial or particle; applying sonication to the mixture; and contacting a substrate with the mixture so as to form a coating of the nanomaterial or the particle onto the substrate. The solute is selected from a salt, a sugar, an acid, a base, or a combination thereof. The present disclosure also provides the resulting products comprising the nanomaterial coating for flexible electronics and functional textiles.

The present invention belongs to the field of flexible electronics, and specifically is a flexible polymer ultrasonic probe. The flexible polymer ultrasonic probe of the present invention is a multi-layer structure, which includes a shielding layer, a backing layer, an upper electrode, a piezoelectric layer, a lower electrode, a matching layer, and a coupling layer from top to bottom; all functional layers are made of polymers and their composite materials, have very good flexibility, and can withstand complex deformations such as bending and twisting. The flexible polymer ultrasonic probe can emit ultrasonic waves under the excitation of electrical signals as an ultrasonic transmitting unit, and can also collect ultrasonic signals as an ultrasonic receiving unit. The flexible polymer ultrasonic probe can be made into a patch for industrial flaw detection of irregular surface objects and long-term health monitoring of the human body. For example, based on the ultrasonic Doppler principle, long-term continuous monitoring of blood flow velocity in human blood vessels can be achieved.

The invention is suitable for the field of flexible printed circuit board testing, and provides a needle mold testing device and method suitable for multiple processes and multiple stations. The needle mold testing device suitable for multiple processes and multiple stations comprises a carrier which is arranged on an assembly line and is used for placing a flexible circuit board in a bending state; the lower test module is arranged below the carrier and comprises a lateral positioning assembly, a first lateral needle mold assembly and a jacking assembly; the lateral positioning assembly and the first lateral needle mold assembly are arranged at the top of the jacking assembly; the upper testing module is arranged above the carrier and comprises a first pressing block testing assembly, a second lateral needle mold assembly and a first ceiling assembly, and the first pressing block testing assembly and the second lateral needle mold assembly are arranged at the bottom of the first ceiling assembly. The device and the method can greatly reduce the equipment cost, improve the equipment stability and reduce the investment and the cost of maintenance personnel.

The invention discloses a medical oncology implantable infusion port leakage monitoring system and method, and relates to the technical field of infusion leakage detection. The multi-parameter sensor module is used for monitoring pressure fluctuation in an infusion port, sensing temperature change of surrounding tissues, detecting abnormal leakage conditions of medicine components and obtaining multi-parameter sensor data; the flexible electronic circuit module is used for processing multi-parameter sensor data in real time; the data analysis and early warning module is used for performing real-time analysis on the processed multi-parameter sensor data and performing graded early warning; and the wireless communication module is used for transmitting the data of the multi-parameter sensor to an external terminal in real time by adopting a wireless communication technology. The invention relates to data acquisition, signal processing, feature extraction and fusion, leakage threshold judgment and response and feedback of an alarm mechanism, the accuracy of sensor data is ensured by applying a multi-modal fusion algorithm, and the safety and medical response efficiency of a patient are improved through a graded early warning mechanism.

The utility model discloses a flexible printed circuit board patch adhesive cutting device which comprises a bottom frame, a vertical frame is installed on the bottom frame, a transverse screw rod and a vertical screw rod are arranged in the bottom frame and the vertical frame respectively through a driving motor, and nuts and lifting rods are installed on the transverse screw rod and the vertical screw rod respectively through limiting mechanisms in a threaded mode. A cutter is installed on the lifting rod, and connecting rods are arranged on the outer walls of the two sides of the cutter. According to the cutting device, the transverse screw rod, the nut, the connecting block, the bottom plate, the anti-disengaging rod and the anti-disengaging groove are arranged, the bottom plate assembly in the cutting device can move and be staggered relative to the cutter assembly, taking and placing operation can be completed in the staggered state, and the cutter assembly cannot be touched to cause injury to operators in the staggered state; and secondly, major accidents caused by the fact that the cutter descends due to the fact that a switch is touched by mistake are avoided, the bottom plate assembly and the transverse screw are flexibly installed and conveniently disassembled, and waste stored in the upper end area can be conveniently dumped and cleaned.

The invention provides photo-crosslinking conductive ink based on aliphatic polycarbonate as well as a preparation method and application of the photo-crosslinking conductive ink. The photo-crosslinking conductive ink comprises an aliphatic polycarbonate polymer, a plasticizer, a crosslinking agent, a crosslinking catalyst and a photo-crosslinking agent. According to the invention, a carbonate monomer 5-methyl-5-carboxyl trimethylene carbonate initiated by PEG2000 is adopted, and an aliphatic polycarbonate polymer is synthesized through a copolymerization reaction and is used as a main matrix material of the conductive ink; the conductive ink not only has good conductivity, but also has biocompatibility and environmental friendliness, and the application range of the conductive ink in the fields of medical instruments, biosensors and the like is widened; the excellent mechanical property ensures that the conductive ink can keep structural integrity and functional stability in practical application, and the conductive ink is particularly suitable for flexible electronic devices and wearable equipment which need to be frequently bent and stretched. The preparation steps are simple and convenient, the process is controllable, raw materials are easy to obtain, energy consumption in the process is low, and the cost advantage is achieved.

The invention relates to the technical field of flexible packaging, and discloses a sensor flexible packaging method suitable for flexible electronics, and the method comprises the steps: determining the initial packaging parameters of a to-be-packaged sensor according to basic parameter information and use demand information; whether the initial packaging parameters are optimized or not is judged based on the analysis result; when it is judged that the initial packaging parameters are optimized, the environmental impact factors are compared with historical data, optimization coefficients of the initial packaging parameters are determined according to comparison results, and optimized packaging parameters are obtained; analyzing the sensor performance data, and judging whether to compensate the optimized packaging parameters or not based on an analysis result; and when it is judged that the optimized packaging parameter is compensated, determining a compensation coefficient of the optimized packaging parameter according to the packaging deviation index, and obtaining a compensation packaging parameter. According to the invention, the reliability and stability of packaging are improved.

The invention discloses a bending-resistant and low-dielectric transparent polyimide film for a flexible electronic device as well as a preparation method and application of the bending-resistant and low-dielectric transparent polyimide film. The surfaces of glass beads are subjected to grafting modification treatment by adopting alkali liquor and a coupling agent; performing ultrasonic dispersion to uniformly disperse the grafted and modified glass beads in a solvent; the preparation method comprises the following steps: dissolving a fluorine-containing diamine monomer in a solvent containing graft modified glass beads under a nitrogen protection atmosphere, after the fluorine-containing diamine monomer is completely dissolved, slowly adding a fluorine-containing dianhydride monomer in batches under a continuous stirring condition, and preparing a transparent polyamide acid solution containing glass beads through a condensation polymerization reaction; and uniformly coating the polyamide acid solution containing the glass beads on a glass substrate through a blade coating machine, and then carrying out gradient heating to obtain the glass bead compounded transparent polyimide film. Fluorine atoms are introduced into molecular structures of dianhydride and diamine, and grafting modified glass beads are doped to serve as filler, so that the transparent polyimide film with bending resistance and low dielectric constant characteristics is successfully prepared.

The embodiment of the invention provides a nurse station ward information collection method and system based on a wireless network. A flexible electronic skin network is integrated in a patient mattress, pressure and temperature data are captured through distributed piezoresistive units, a multi-modal thermodynamic diagram is generated, and data synchronization is achieved through a wireless ad hoc network protocol. And driving an air cushion bed actuator to perform gradient compensation according to a matching result of the pressure gradient track and the physiological parameters, transmitting a compressed hierarchical data packet to a nurse station gateway by adopting a remote wide area network protocol, reconstructing a three-dimensional pressure model and generating an early warning instruction. According to the technical scheme provided by the embodiment of the invention, the occurrence probability of health problems such as bedsore caused by long-time bed lying is remarkably reduced, and the nursing quality of the patient is improved.

The invention provides a low-coupling flexible self-powered multi-mode sensor and a preparation method and application thereof, and belongs to the technical field of flexible electronic materials. Comprising a temperature sensing layer, a pressure sensing layer and a humidity sensing layer which are stacked in sequence. The temperature sensing layer is made of a PEDOT: PSS / MWCNT composite material and outputs a temperature response signal through resistance change; the pressure sensing layer is formed by combining a PDMS layer with a micro-nano structure and a PET layer, and outputs a pressure response voltage signal based on a triboelectric effect; the humidity sensing layer is composed of PVA / CA composite matrix and EGaIn liquid metal, and humidity response signals are output through hygroscopicity induced resistance change. The sensor realizes simultaneous detection of three physical quantities of temperature, pressure and humidity, has low coupling degree among the sensing units, and can be applied to the fields of robot interaction, wearable health monitoring and environment monitoring.