201results about How to "Easy to charge" patented technology

The invention discloses an ionic liquid modified polyimide nanofiber film and an air purification filter screen based on the ionic liquid modified polyimide nanofiber film, and belongs to the technical field of film filtering materials. The preparation method comprises the following steps: firstly, selecting a diamine monomer and a dianhydride monomer to carry out low-temperature polycondensation reaction, and then carrying out solvent replacement and freeze drying to obtain polyamide acid powder; dissolving the powder to obtain a polyamide acid spinning solution, preparing an ionic liquid / polyamide acid spinning solution on the basis, and carrying out electrostatic spinning to obtain an ionic liquid / polyamide acid nanofiber membrane; and finally, carrying out high-temperature thermal imidization treatment to prepare the ionic liquid / polyimide nanofiber membrane. The method is simple and efficient, the problems of low resistance, high pressure drop and the like of a traditional nanofiber film in air filtration are solved, development and application of the nanofiber film in the field of air filtration are further widened, and the nanofiber film has important scientific significance and application value in the fields of high-temperature filtration, gas adsorption and the like.

The invention discloses an unmanned charging control method, device and system and a storage medium, and the method comprises the steps: responding to a vehicle parking signal when the vehicle parking signal corresponding to a to-be-charged vehicle is obtained, and controlling a six-degree-of-freedom mechanical arm control mechanism to execute a charging gun grabbing action, controlling the charging gun to move to a target charging position corresponding to the vehicle to be charged; when the charging gun moves to the target charging position, the six-degree-of-freedom mechanical arm control mechanism is controlled to execute the charging gun plugging action, so that the charging gun is controlled to be in butt joint with the vehicle needing to be charged; and when butt joint is completed, the six-degree-of-freedom mechanical arm control mechanism is controlled to execute a homing action, and the charging pile is controlled to charge the vehicle needing to be charged through the charging gun electrically connected with the charging pile. Quick response and power matching of the electric vehicle on any charging parking space can be achieved, universality and practicability are high, charging power is large, efficiency is high, and unmanned intelligent charging is truly achieved; the device is simple in structure, mature in technology, low in cost and suitable for popularization and application.

The invention discloses a new energy automobile charging management system, and aims to improve the charging efficiency, prolong the service life of a battery and improve the user experience. The system comprises a battery monitoring module, a charging mode management module, an intelligent scheduling module, a remote control module, a safety protection module, a big data analysis module and a billing management module. The battery monitoring module collects data such as battery voltage, current and temperature in real time; the charging mode management module dynamically selects a fast, standard or slow charging mode according to the battery state and the user demand; the intelligent scheduling module optimizes a multi-vehicle charging sequence to realize reasonable resource allocation; the safety protection module provides overvoltage, overcurrent and temperature protection to ensure charging safety; the remote control module enables a user to monitor and adjust the charging state in real time. According to the invention, through intelligent charging management, resource configuration optimization, charging efficiency improvement, safety risk reduction in the charging process and battery life prolonging, convenient charging experience is provided for users.

The utility model discloses a garden landscape pavilion, which relates to the technical field of gardens, and comprises a pavilion seat, the upper surface of the pavilion seat is fixedly connected with four pavilion columns, a pavilion top, a protection mechanism and two seat plates are arranged above the pavilion seat, the pavilion top and the seat plates are fixedly connected with the pavilion columns, the protection mechanism comprises two servo motors fixedly connected with the pavilion columns, and the servo motors are fixedly connected with the pavilion columns. The output shaft ends of the two servo motors are fixedly connected with protection assemblies rotationally connected with the pavilion columns. According to the landscape pavilion, the pavilion base, the pavilion columns, the pavilion top and the protection mechanism are arranged in a matched mode, when tourists play in a garden and encounter rainy days, rainwater can be shielded through the extensible protection assembly, the rainwater is prevented from floating into the landscape pavilion, and therefore the tourists leaning on the pavilion columns in the landscape pavilion are prevented from being affected; and meanwhile, the protection assembly can be limited, the possibility that the protection assembly is blown and shaken is reduced, and therefore the rain and wind shielding effect of the garden landscape pavilion is guaranteed, and the playing comfort of tourists is improved.

The invention relates to the technical field of cement product overturning, and discloses a cement product prefabricated part overturning device which comprises a cement prefabricating mold and supporting frames located at the two ends of the cement prefabricating mold, supporting transverse rods are fixed to the upper portions of the supporting frames, and lifting assemblies are arranged on the supporting frames. A first servo hydraulic cylinder is fixed to the lifting assembly, a mounting plate is fixed to the end of the first servo hydraulic cylinder, a servo motor is fixed to the mounting plate, and a mechanical clamping jaw is fixed to a motor shaft of the servo motor. The two ends of the cement prefabricating mold are respectively provided with a C-shaped plate, and the two ends of the cement prefabricating mold are respectively fixedly provided with a first sliding bracket, so that the purpose that an opening of the cement prefabricating mold can be quickly reversed downwards can be achieved, the overturning efficiency can be greatly improved, the frequency of manual operation can be reduced, time and labor are saved, and convenience and rapidness are realized; and the operation safety is improved.

The present invention relates to the technical field of smart street lamps, and specifically to a smart street lamp with a shared charging function, comprising a lamp pole, a lamp board fixedly mounted on the top of the lamp pole, a wind cup fixedly mounted on the top of the lamp pole, a guide opening opened on the outer wall of the lamp pole, and a guide baffle slidably mounted on the inner wall of the guide opening. Compared with the prior art, the present application provides a cooling component, and the smart street lamp not only meets the basic road lighting needs, but also integrates a charging function, so that pedestrians and electric vehicle users can conveniently use the charging seat of the street lamp for charging when needed. At the same time, the smart street lamp drives the wind cup to rotate through wind power, thereby driving the impeller to pump water and circulate, thereby realizing the cooling function of the charging device, without the need for external power supply, making full use of natural resources, reducing energy consumption, and reducing potential safety hazards caused by overheating, thereby improving the safety and reliability of the street lamp.

The invention relates to the technical field of chargers, and discloses an embedded intelligent quick charger which comprises a charging shell, a charging motor is inserted into the inner top of the charging shell, and a charging lead screw, a fixing seat, cooling fins, a cooling shell, a cooling fan and a storage groove are inserted into one end of the charging motor. According to the invention, the fixed seat moves up and down in the charging shell, so that the charging assembly and the rotating assembly pass through the cover plate hole and move out of the charging shell for use, and when not in use, the charging assembly and the rotating assembly move into the charging shell for protection, so that dust and moisture can be effectively prevented from entering the power strip, and the service life of the power strip is prolonged; a rotating assembly rotates, so that a user can select a proper interface for use conveniently, and the situation that plugging and unplugging are inconvenient due to the fact that the interface is not located at a proper position, and after the temperature in the charging shell is too high, a cutter cuts an insulation bag to enable insulation paste to flow into the charging shell, so that the charging efficiency is improved is reduced. And the potential safety hazard of fire caused by internal combustion of the charging shell is prevented.

The utility model discloses a multifunctional child electric toothbrush sterilization travel box which comprises a base box, a tooth glass is arranged at the top end of the base box in a covering mode, a toothbrush handle and a toothbrush head are respectively arranged in the base box in an inserted mode, and a containing hole used in cooperation with the toothbrush handle is formed in one side of the top end of the base box. A charging base matched with a toothbrush handle for use is arranged at the bottom end of the containing hole, a sterilization cavity is formed in the other side of the top end of the base box, a supporting column is arranged on one side of the sterilization cavity, a flexible fixing frame matched with a toothbrush head for use is arranged on one side of the supporting column, and a heating piece is arranged at the bottom end of the sterilization cavity. A plurality of ultraviolet sterilization lamps are arranged on one side of the inner wall of the sterilization cavity. Compared with the prior art, the multifunctional toothbrush has the advantages that the toothbrush head can be kept dry, bacteria breeding is avoided, bacteria and viruses in an oral cavity contacted with the toothbrush head can be sterilized and disinfected, washing and mirror looking are facilitated, and the functions are diversified.

The utility model relates to the technical field of table lamps, in particular to a detachable table lamp, and provides the following scheme aiming at the defects that in the prior art, the table lamp cannot be disassembled and assembled, so that the table lamp is inconvenient to transport, and the lamp can be used only after being connected with a household power supply and can only be placed on a table top, the detachable table lamp comprises an extension socket lamp holder, and a socket is arranged on the extension socket lamp holder; the top of the extension socket lamp holder is provided with a USB interface, the top of the extension socket lamp holder is provided with a first lamp pole, the first lamp pole is connected with a second lamp pole, the top of the second lamp pole is connected with an elbow, one side of the elbow is fixedly connected with a connecting piece, and one side of the connecting piece is provided with a buckle. Meanwhile, the use height of the table lamp holder can be adjusted, an independent power supply is arranged in the table lamp holder, the table lamp holder can be conveniently charged, and the table lamp holder can be used as an independent lighting tool.

The invention discloses a charging socket with a lighting function and a control method thereof, and relates to the technical field of charging sockets, the charging socket comprises a charging socket body and a lighting indication control circuit arranged in the charging socket body, and a lighting lamp is mounted in a mounting hole formed close to the top of a charging socket shell; the reed switch is mounted in a mounting hole formed in the peripheral side wall of the charging end head of the charging gun; the reed switch is a normally open switch, so that the lighting indication function of the charging socket is added, a user can smoothly realize the connection of a charging gun under the condition that the light is dark, namely, the position of a plugging port at the charging end of a vehicle or the condition that whether the plugging port has foreign matters or is damaged and the like which may cause safety problems can be conveniently checked by means of the light emitted by the lighting lamp; and the charging gun can be conveniently and smoothly inserted into the vehicle charging end socket for charging when the light is dark.

The invention provides a battery diagnosis method, device and equipment based on a charging pile and a storage medium, and the method comprises the steps: applying pulse current signals with three preset frequencies to the charging pile before a target battery is charged, extracting the fundamental components of voltage and current signals through a battery management system, calculating the equivalent circuit model parameters of the battery, and calculating the equivalent circuit model parameters of the battery; and generating an initial state diagnosis result. In the charging process, superimposed small-amplitude square wave pulse current is applied to the battery according to an initial diagnosis result, a real-time fundamental component is extracted, a battery impedance value is calculated, and an impedance change curve is generated. And generating an adaptive charging control strategy according to the diagnosis result, the impedance curve and the circuit model parameters, recording change parameters of the adaptive charging control strategy, and finally generating a target state diagnosis result. By accurately diagnosing the battery state, dynamically adjusting the charging strategy and optimizing the charging process, the charging efficiency is improved, meanwhile, the battery loss is reduced, the service life of the battery is prolonged, and the charging efficiency is improved.

The invention relates to an intelligent door lock charging control method and device, computer equipment and a storage medium, and the method comprises the steps: monitoring the electric quantity of a door lock in real time, and triggering a charging request signal under the condition that the electric quantity of the door lock is lower than a preset low electric quantity threshold value; according to the charging request signal, door lock orientation information and alignment angle information are obtained, a light source emission angle is adjusted according to the door lock orientation information and the alignment angle information, and a charging instruction is generated; adjusting light source emission intensity and starting light source emission according to the charging instruction; and under the condition that the electric quantity of the door lock reaches a preset high electric quantity threshold value, the charging process is stopped, and corresponding charging information is recorded. The method has the effect of improving the charging efficiency of the intelligent door lock.

The utility model provides an intelligent ring assembly and relates to the technical field of intelligent wearable equipment. The intelligent ring assembly comprises a charging box and a ring body. Wherein an accommodating cavity for accommodating the ring body is formed in the charging box. A first charging part is arranged in the containing cavity, a second charging part is arranged on the ring body, when the ring body is located in the charging box, the first charging part is electrically connected with the second charging part, and the first charging part is used for charging the ring body through the second charging part when the ring body is located in the charging box. According to the intelligent ring assembly disclosed by the utility model, the ring body and the charging box are arranged, so that the ring body can be charged in the charging box, the charging is convenient, the ring body is not easy to fall off from the charging box during charging, and the ring body is not easy to lose.

The invention provides a flocculating agent for sewage treatment. The flocculating agent for sewage treatment is prepared from the following components: polyacrylamide, a surfactant, a modified ferric chloride compound, sodium chloride, a pH regulator and an auxiliary agent, wherein the modified ferric chloride compound is a product obtained by reaction of starch and ferric chloride. The preparation method of the flocculating agent for sewage treatment comprises the following steps: S1, adding starch and caustic soda liquid into water, stirring, then adding acid into the water, adjusting the pH value, then adding a ferric trichloride solution into the water, reacting, and curing to obtain the modified ferric chloride compound; s2, polyacrylamide is added into the modified ferric chloride compound, standing is conducted for 15-30 min, and a mixture is obtained; s3, blending other components with the mixture, and stirring to obtain the flocculating agent for sewage treatment. The modified ferric chloride compound improves the adsorption capacity and stability of the flocculant, and has a good application prospect.

The invention relates to the technical field of cement grinding aids, and particularly discloses an efficient composite Portland cement clinker grinding aid and application thereof. The grinding aid comprises a liquid A and a liquid B which are separated from each other. Wherein the solution A comprises a mixed solution of ethylene glycol and water and iron dihydrogen phosphate. Wherein the volume ratio of the ethylene glycol to the water is (3-3.7): 1, and the iron dihydrogen phosphate in the mixed solution is in a saturated state. The solution B comprises a sodium borohydride and / or potassium borohydride solution, a polycarboxylate superplasticizer and modified magnesium oxide powder. Wherein the mass fraction of the sodium borohydride and / or potassium borohydride solution is 3-5%, the mass fraction of the polycarboxylate superplasticizer in the solution B is 12-17%, and the content of the modified magnesium oxide powder is 4.5-7 g / L. The grinding aid disclosed by the invention can effectively eliminate the electrostatic effect of cement particles, reduce re-agglomeration among the particles and improve the dispersity of cement clinker particles, so that the grinding efficiency is improved.

The invention relates to an automobile emergency starting power supply, which relates to the technical field of automobile power supplies, and comprises a power supply assembly, a state monitoring assembly, an environment monitoring assembly and a charging controller, the power supply assembly comprises an energy storage battery, a charging output interface, a charging input interface and an automobile emergency output interface; the state monitoring assembly is used for obtaining state information of an automobile storage battery. The environment monitoring assembly is used for acquiring operation environment information; the charging controller is used for uploading the state information and the operation environment information to the cloud platform, and the cloud platform is used for obtaining initial charging parameters and judging whether the initial charging parameters are adjusted or not according to the state information and the operation environment information of the automobile storage battery, if not, the initial charging parameters are issued to the charging controller, and if yes, optimal charging parameters are generated; and issuing; the charging controller is further used for controlling the energy storage battery to charge the automobile storage battery based on the initial charging parameter or the optimal charging parameter, and the reliability of the automobile emergency starting power supply is improved.

The utility model discloses a multifunctional aroma diffuser capable of quickly diffusing aroma, which comprises a bottom shell provided with a spice storage cavity, spices capable of diffusing are arranged in the spice storage cavity, a surface cover is arranged at an opening of the bottom shell, and a power supply and a driving motor are arranged in the bottom shell; the top of the face cover is provided with a multi-layer vertical face fanning light-transmitting structural part which is fixed to a main shaft of the driving motor and generates breeze to achieve the function of a small fan during rotation. The driving motor drives the multi-layer vertical face fanning light-transmitting structural part to rotate, and the fragrance of the perfume is diffused outwards through the multi-layer vertical face fanning light-transmitting structural part. The fan is reasonable in structural arrangement, and the top of the face cover is provided with the multi-layer vertical face fanning light-transmitting structural part which is fixed to the main shaft of the driving motor and generates breeze to achieve the function of a small fan when rotating. The driving motor can drive the multilayer facade fanning light-transmitting structural member to rotate to generate gentle breeze to realize fanning, and the generated airflow can quickly diffuse fragrance, so that the diffusion efficiency of the fragrance is improved, and the effectiveness of aromatherapy is improved.

The utility model provides fork truck battery charging cabinet, through setting open type charging bin in the front side of cabinet body, can fast insert battery into charging bin when charging, convenient operation, set up charger group and control module in the rear side hidden mode of cabinet body, and open the cabinet door at rear side to carry out maintenance operation to charger group and control module, each module layout is reasonable, and charging and maintenance operation are convenient, appearance is simple and elegant, and the practicality is good, solves the technical problem that the existing technology has, charging bin charging operation process is inconvenient, and maintenance operation is inconvenient to the charger and control system, and the rationality of module layout is also relatively lacking.

The utility model provides a suspension front axle hydraulic control system which comprises a front axle oil cylinder, a first energy accumulator, a second energy accumulator, a first proportional valve, a second proportional valve and an oil supplementing unit, the first energy accumulator is connected with the first proportional valve, and the first proportional valve is connected with the piston rod side of the front axle oil cylinder; the second energy accumulator is connected with a second proportional valve; the second proportional valve is connected with the cylinder body side of the front axle oil cylinder; one end of the oil supplementing unit is connected with the piston rod side of the front axle oil cylinder, and the other end of the oil supplementing unit is connected with the cylinder body side of the front axle oil cylinder. According to the utility model, kinetic energy is absorbed through the first energy accumulator, the second energy accumulator and the front axle oil cylinder, so that bumping and vibration of the front axle are relieved; the oil pressure exchange resistance of the front axle oil cylinder is adjusted through the first proportional valve and the second proportional valve, so that the vibration frequency and amplitude of the front axle are adjusted, it is guaranteed that the front axle is suspended within the proper frequency and amplitude, and the comfort level of a driver and passengers is improved.

The utility model provides a multifunctional patch board, and relates to the technical field of electrical equipment, the patch board comprises a socket charging board and a wireless charging board, the socket charging board comprises a first surface, and a plurality of groups of power jacks are arranged on the first surface at intervals; the wireless charging panel is rotationally connected with the socket charging panel and rotates between a first position and a second position relative to the socket charging panel, the first charging surface of the wireless charging panel is parallel to the first surface at the first position, and a preset included angle is formed between the first charging surface of the wireless charging panel and the first surface at the second position. And the angle of the wireless charging panel is adjusted, so that the charging requirements of users in various environments can be met.

This utility model belongs to the field of shared power bank technology, specifically relating to a voice-interactive shared power bank. The shared power bank's outer shell incorporates interactive and fixing components, integrating intelligent interaction and convenient charging. The interactive components include a waterdrop screen, a voice interaction module, and a network module, enabling voice-guided rental and cabinet location via a cloud database. The waterdrop screen, combined with a recessed button, supports reading during power outages. A wireless charging coil and magnetic plate provide magnetic fast charging for easy operation. The fixing component adopts an L-shaped structure, using a combination of T-slots, silicone strips, and rotating blocks to securely hold the phone when the user moves. The outer shell has a speaker hole and charging port on the side, an input interface on the bottom, and anti-collision pads on opposite sides to cushion impacts, enhance stability, and ensure the device's safety and durability.

The invention discloses a bracelet tumble detection system and detection method based on a magnetic attraction split type framework, and belongs to the technical field of intelligent wearing. The system comprises an upper watch body and a lower watch body which can be separated, and the lower watch body continuously monitors the connection state of an acceleration sensor and a magnetic attraction contact. When a user falls down, a transient signal interaction change of a contact can be caused by a violent impact force, and a specific electric signal characteristic is generated. According to the invention, through fusion analysis of the acceleration sensor threshold and the contact transient signal, high-precision and low-false-alarm identification of the fall event is realized. Meanwhile, the split type design is matched with a double-battery management strategy, so that the problem of monitoring interruption during the charging period is solved. The system also has a multi-level alarm link guarantee, and ensures reliable transmission of help-seeking information. According to the invention, the safety monitoring capability of wearable equipment of high-risk crowds such as old people is effectively improved.

The present application relates to the technical field of accelerator beam measurement, and particularly discloses a water gravity type inner target beam measurement device, which comprises a beam measurement assembly, a gravity adjustable cooling assembly, a lever balance assembly and a limiting piece, the beam measurement assembly is connected to one end of the lever balance assembly through the gravity adjustable cooling assembly, and the limiting piece is arranged on the side surface of the lever balance assembly. The device adopts a seesaw type structure, fully utilizes the installation space in the cyclotron shell, utilizes the gravity of the cooling liquid as the power of the seesaw type structure, can omit the arrangement of a complex power driving piece, is small in size, simple in structure, low in cost, good in cooling effect, and stable in the beam size of the inner target measurement piece during measurement.

The utility model relates to the field of electric vehicle charging equipment, in particular to a movable charging pile socket which comprises a charging pile body, one side of the surface of the charging pile body is provided with a first moving groove, one side of the first moving groove is connected with a socket panel through a moving assembly, and the moving assembly comprises a first moving block. A first moving groove is formed in the bottom end of the first moving block, a plurality of grooves are formed in the bottom end of the first moving groove at equal intervals, a limiting hole is formed in the bottom end of the first moving block, and a limiting assembly is installed in the limiting hole. According to the charging pile, the socket panel can stably stay at any required position, accidental displacement or falling of the socket panel in the charging process is avoided, the problems that a socket of a traditional charging pile is fixed in position and inconvenient to use are solved, and a more convenient solution is provided for charging of the two-wheeled electric vehicle.

The utility model provides a new energy automobile is with fire safety house, including the fire safety house for setting in parking stall, its characteristics are: the fire safety house one end's vehicle import and export place sets the gate that can open and close, the top of fire safety house body sets the water tank, and the water tank has the water inlet. The sidewall interval of fire safety house body is the sink, or sets up the separate sink in the inside or the outside of fire safety house body sidewall, and the water outlet of water tank connects the top of sink, and the bottom of sink is linked with the water flow export that sets up in the sidewall bottom of fire safety house, and sets up the drain that can open and close on the bottom surface of fire safety house. The upper portion or the bottom surface in the fire safety house body sets up the flame detector or / and temperature sensor, and the fire safety house body configuration controller, and the flame detector or / and temperature sensor are connected with controller. Can discover new energy automobile fire in time, and rapidly give new energy automobile cooling, and isolate with surrounding environment, prevent fire spreading, reduce property loss.

The invention discloses an electric bicycle with an intelligent charging anti-theft function, and relates to the technical field of electric bicycles. The electric bicycle with the intelligent charging and anti-theft functions comprises an electric bicycle body, an intelligent charging device, a handle, a buffer mechanism, a front wheel, a rear wheel mechanism and an anti-theft device, and the electric bicycle body is firm and durable and bears the weight of the whole bicycle body. The intelligent charging device can automatically identify the state of the battery and perform efficient charging, so that the service life of the battery is ensured, and potential safety hazards caused by overcharging are avoided. The design of the handle accords with ergonomics, and the handle is comfortable to hold and convenient to control. Bumping in the driving process is effectively relieved through the buffering mechanism, and the riding comfort is improved. The front wheel mechanism and the rear wheel mechanism both adopt high-quality tires and brake systems, so that the stability and safety of driving are ensured. And the anti-theft device adopts an advanced intelligent identification technology, so that the electric bicycle can be effectively prevented from being stolen, and a user can travel more securely.

The utility model discloses a kind of battery pack and electric tool, battery pack includes shell, battery monomer, circuit board and temperature sensor, shell inside is equipped with accommodating cavity;Battery monomer is located in accommodating cavity;Circuit board is located in accommodating cavity, and is located at one end of battery monomer, and first interface, second interface, indicator, switch and controller are equipped on circuit board;Temperature sensor is located in accommodating cavity, is connected in circuit board by first lead, and temperature sensor is located at one side of battery monomer;Wherein, controller is used to receive the visual indication of at least one input signal in first interface, second interface and switch after control indicator provides.It can be realized in the case where trigger switch or first interface and external access or second interface and external access battery pack can provide temperature and power state as needed to user, any charging and / or discharging of battery pack is facilitated to plan, on the basis of not increasing circuit board, the state visual indication of battery monomer is realized.

The invention provides a glasses system for obtaining myopia causing factors and an orthokeratology glasses failure judgment method. The system comprises an environment spectrum sensor used for accurately obtaining environment light parameters and an electroencephalogram sensor used for obtaining user emotion change data. Acquiring data of the sensor module and generating environment parameters, activity parameters, electrophysiological parameters (electroencephalogram data) and eye parameters, judging whether the reading distance or the reading posture data meets a set early warning threshold value or not, if not, recording the reading distance and the posture data, and if yes, recording the reading distance and the posture data; and reminding the user to improve and record reading distance and posture data. According to the method and the system, whether the eyes of the user are really stimulated in the reading and environment can be accurately judged, and a doctor can conveniently and accurately judge the myopia causing factors of the user according to the environment parameters, the activity parameters, the electrophysiological parameters (electroencephalogram data), the eye using parameters and the vision data.

The invention belongs to the technical field of flexible piezoelectric sensors, and relates to a carbon felt-hydrogel composite piezoelectric sensor and a preparation method thereof. The sensor comprises a piezoelectric sensing layer, a cross-scale dual-network hydrogel layer, an electrode layer, a leading-out wire and a packaging layer, the two cross-scale dual-network hydrogel layers are arranged on the upper side and the lower side of the piezoelectric sensing layer in a stacked mode to form a sandwich structure. The cross-scale dual-network hydrogel layer is an elastic hydrogel material formed by compounding a carbon fiber felt skeleton and a molecular-level network polymer, and the molecular-level network polymer penetrates through the interior and the surface of the carbon fiber felt skeleton and is formed by cross-linking and curing; the number of the electrode layers is two, and the two electrode layers are arranged on the outer sides of the two cross-scale dual-network hydrogel layers in a stacked mode respectively. The lead-out wire is electrically connected with the electrode layer; the packaging layer wraps the outer side of the electrode layer. According to the sensor, the mechanical property, the conductivity and the stability of the flexible piezoelectric sensor can be improved.