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172 results about "Thin film sensor" patented technology

Online monitoring method for curing process of resin-based composite material

The invention provides an online monitoring method for a curing process of a resin-based composite material, and belongs to the technical field of curing monitoring of composite materials. In the curing process of the resin-based composite material, a conductive patch is placed on the surface of the resin-based composite material to form a laminated structure consisting of the conductive patch, a dielectric layer containing resin and a high-reflection substrate, and the curing process of the resin-based composite material is deduced in real time by using a microwave signal to radiate the laminated structure and monitoring peak valley characteristics and temperature changes of a reflection signal. According to the method, a microwave signal is utilized to irradiate a laminated structure, and the curing process of the resin-based composite material is judged by monitoring the peak valley characteristics and temperature change of a reflected signal in real time. The in-situ online curing process monitoring method based on the microwave signal and the conductive patch film sensor not only can realize real-time online monitoring of the resin curing key point and the curing degree, but also has the remarkable advantages of being capable of adjusting the monitoring position in real time, realizing curing degree field monitoring and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Photovoltaic module vacuum lamination system based on dynamic pressure feedback and control method thereof

The invention relates to the technical field of photovoltaic module manufacturing, in particular to a photovoltaic module vacuum laminating system based on dynamic pressure feedback. The dynamic pressure adjusting module comprises a piezoelectric film sensor and a servo motor, the piezoelectric film sensor is used for detecting the pressure borne by the photovoltaic module, and the control module calculates and obtains the real-time optimal pressure and then controls the servo motor to act so as to achieve the real-time optimal pressure; the heating control module comprises a heating plate, a thermal infrared imager and a PID temperature control unit, the heating plate is used for heating the photovoltaic module, the thermal infrared imager is used for detecting the surface temperature distribution of the photovoltaic module, and the PID temperature control unit is used for controlling the temperature of the heating plate; the vacuum control module comprises a plurality of air chambers which are independently arranged, each air chamber is provided with an air inlet pipeline and an air outlet pipeline which are communicated with the laminating machine cavity, and micro electromagnetic valves are arranged on the air inlet pipelines and the air outlet pipelines.
Owner:JINENG CLEAN ENERGY TECH LTD

Device and method for representing the foam porosity state of foamed lightweight soil with self-adjusting beams

A device and method for representing the foam porosity state of foamed lightweight soil with self-adjusting beams, and relates to the technical field of sound absorption coefficients measurement; the device includes a standing wave tube, a plurality of polyvinylidene fluoride piezoelectric films, a sensor, an exciter, a push-pull handle, an adjustable telescopic tube, a foamed lightweight soil detection material, a charge amplifier, a data memory, a data adapter, a signal generator, an adaptive power amplifier board, and a PC computer; the device of the invention has low cost, long service life, high measurement accuracy, relatively simple production process, and can be applied to different scenarios.
Owner:SOUTHWEST JIAOTONG UNIV

High-temperature strain film sensor for detecting thermal stress of small square billet crystallizer

The invention discloses a high-temperature strain film sensor for detecting thermal stress of a small square billet crystallizer, and relates to the technical field of sensors, the high-temperature strain film sensor comprises a composite system formed by fiber structures, the fiber structures are interwoven and interspersed, and the composite system sequentially comprises a substrate layer, a high-temperature insulating layer, a piezoelectric film layer and a multifunctional composite layer from bottom to top; a channel is arranged in the piezoelectric film layer, the channel penetrates to the high-temperature insulating layer and the multifunctional composite layer, and the channel is connected with external equipment through a lead electrode. The multifunctional composite layer comprises a thermocouple array and a sensitive grid unit which are distributed in parallel and interwoven, and the thermocouple array is used for superposing the thermoelectric effect and increasing the output situation; the sensitive grid unit is used for converting strain of the crystallizer steel pipe into electric signals through sensitive grid deformation and outputting the electric signals, and real-time measurement of stress and strain on the surface or in the crystallizer is achieved. The sensor designed by the invention is good in high temperature resistance, good in structural stability, long in service life and high in measurement precision.
Owner:XI AN JIAOTONG UNIV

Portable ratio fluorescent film sensor for visual detection of oxygen as well as preparation method and application of portable ratio fluorescent film sensor

PendingCN121805219AMaterial nanotechnologyNanoopticsProtoporphyrin IXUltraviolet lights
The invention belongs to the technical field of gas sensors, and discloses a portable ratio fluorescent film sensor for visual detection of oxygen as well as a preparation method and application of the portable ratio fluorescent film sensor. According to the sensor, polymethyl methacrylate is used as a base material, a carbon dot emitting blue light is used as a fluorescent indicator, protoporphyrin emitting red light is used as a fluorescent reference agent, and the two materials are physically blended to form a blue-red dual-emission system; under the excitation of 365nm ultraviolet light, the oxygen concentration affects the yield of active oxygen, the active oxygen quenches the fluorescence of the carbon dots, the fluorescence of protoporphyrin is stable, and the sensor gradually changes from blue violet to red. Meanwhile, the invention discloses an oxygen quantitative / semi-quantitative detection method of the sensor. The preparation process is simple, the cost is low, the detection operation is simple and convenient, the anti-interference performance is strong, the high-sensitivity visual portable detection of the oxygen concentration can be realized, and the sensor is suitable for the fields of food packaging, medical monitoring, industrial safety and the like, and has the potential of large-scale production and commercial application.
Owner:SICHUAN UNIV

Hafnium-zirconium-oxygen film, preparation method thereof and hafnium-zirconium-oxygen film sensor

The invention provides a hafnium-zirconium-oxygen film, a preparation method thereof and a hafnium-zirconium-oxygen film sensor, and belongs to the technical field of piezoelectric sensors, the hafnium-zirconium-oxygen film is prepared from a hafnium-zirconium-oxygen material, the chemical general formula of the hafnium-zirconium-oxygen material is Aly-HfxZr1-xO2, x is greater than or equal to 0.3 and less than or equal to 0.7, and y is greater than or equal to 0.02 and less than or equal to 0.08. The lead-free hafnium-based oxide is selected as a piezoelectric core, HfxZr1-xO2 is adopted as a matrix, Al is doped to stabilize an orthogonal ferroelectric phase and inhibit oxygen vacancy, d33 = 85-95 pC / N within the thickness range of 10-200 nm and reaches 90% of that of an existing PZT film, and the Curie temperature is increased to 600 DEG C and is greatly increased compared with 350 DEG C of the PZT film. And the material is completely free of lead and conforms to the RoHS instruction.
Owner:HUBEI UNIV

Preparation method of lanthanum aluminate / strontium titanate nanostructure for hydrogen detection

The invention belongs to the field of film sensors, and discloses a preparation method of a lanthanum aluminate / strontium titanate nanostructure for hydrogen detection, which comprises the following steps: preparing a strontium titanate single crystal substrate, depositing a single crystal epitaxial lanthanum aluminate film on the strontium titanate single crystal substrate by pulse laser to obtain a single crystal epitaxial lanthanum aluminate / strontium titanate material; then, a stripe-shaped periodic surface nanostructure is formed on the surface of the single crystal epitaxial lanthanum aluminate thin film through femtosecond laser induction, a lanthanum aluminate / strontium titanate nanostructure is obtained, and then precious metal nanoparticles are deposited on the surface of the lanthanum aluminate / strontium titanate nanostructure. According to the preparation method, the highly-ordered single-crystal lanthanum aluminate / strontium titanate heterogeneous film is obtained by accurately controlling pulse laser deposition process parameters, and a nano stripe periodic structure is prepared on the surface of lanthanum aluminate by accurately controlling pulse femtosecond laser processing parameters, so that the specific surface area is effectively increased, gas adsorption sites are increased, and the specific surface area of the lanthanum aluminate / strontium titanate heterogeneous film is increased. And the gas charge transmission capability of the lanthanum aluminate / strontium titanate interface two-dimensional electron gas is improved.
Owner:DEQING COUNTY ZHEJIANG UNIV OF TECH MOGANSHAN RES INST

An apparatus and method for measuring solid-liquid two-phase flow kinetic information

The present application relates to a kind of device and method for measuring solid-liquid two-phase flow dynamics information, including measuring plate, glass plate, pore pressure sensor, filter screen, triaxial force sensor, force plate, outer pressure strip, inner pressure strip, sealing film, sensor bracket, dynamics information includes the pressure of liquid component in two-phase flow and the force of overall to force plate;The present application can ensure fluid seal when the mechanical sensor is reasonably measured dynamics information;Meanwhile, the present application can also realize the simultaneous measurement of solid-liquid two-phase flow kinematics and dynamics information by mechanical sensor cooperation high-speed camera technology.
Owner:BEIJING INST OF TECH

A sheet-integrated platinum membrane heat flux sensor for a hypersonic shock tunnel

The application discloses a sheet type integrated platinum film heat flow sensor for a hypersonic shock tunnel, which comprises a glass substrate in a sheet shape, a plurality of platinum thin film lines arranged on the surface of the glass substrate along the width direction of the glass substrate, and silver paste contacts corresponding to the platinum thin film lines arranged on the side edges of the glass substrate and electrically connected with the platinum thin film lines, wherein the end of the silver paste contact away from the platinum thin film line is used for welding a lead wire. The sheet type integrated platinum thin film line resistance sensor has the characteristics of high frequency response of a two-millimeter-diameter thin film sensor. After the thickness of the glass substrate as a sensor bearing substrate is reduced, the sensor can be applied to a particularly thin part of an aircraft for heat measurement, and a measurement point with a gradient range is formed on the glass substrate, so that the aerodynamic heat of the aircraft surface with a certain gradient can be measured.
Owner:INST OF MECHANICS CHINESE ACAD OF SCI

A distributed temperature measurement method for a solid oxide fuel cell unit surface

The application relates to the technical field of temperature measurement, and discloses a distributed temperature measurement method for the surface of a solid oxide fuel cell unit, which comprises the following steps: preparing a PDC thin film temperature sensor array on the surface of the solid oxide fuel cell, so as to realize distributed measurement of the surface temperature of the solid oxide fuel cell; wherein the PDC thin film temperature sensor array comprises a transition layer, an insulation layer, a sensitive layer, a wire layer, a bonding pad, a protective layer and a lead connection structure; the transition layer is arranged above the cathode, the anode or the electrolyte of the solid oxide fuel cell, the insulation layer covers the top of the transition layer, the sensitive layer, the wire layer and the bonding pad are all arranged above the insulation layer, the sensitive layer comprises an array of multiple temperature sensitive units, the lead connection structure is connected with the wire layer through the bonding pad, and the protective layer covers the top of the sensitive layer and the wire layer. The application can reduce process steps and improve the compatibility of the thin film sensor and the solid oxide fuel cell material.
Owner:LINGNAN NORMAL UNIV

A high-density piezoelectric array flexible film sensor and its acoustic-assisted 3D manufacturing method

The present invention discloses a high-density piezoelectric array flexible thin film sensor and its acoustic-assisted 3D manufacturing method. This sensor includes an upper electrode layer, a sensing layer, and a lower electrode layer; the upper electrode layer and the sensing layer are provided with mutually cooperating concave-convex interlocking positioning structures, the upper electrode layer and the lower electrode layer are provided with an upper layer of microparticle silver electrode array and a lower layer of microparticle silver electrode array, respectively, and the sensing layer is provided with a barium titanate microparticle strip array, and the upper layer of microparticle silver electrode array is electrically connected to the lower layer of microparticle silver electrode array via the barium titanate microparticle strip array; this sensor is prepared by an acoustic-assisted 3D printing manufacturing method. The method of the present invention realizes the additive manufacturing of a high-resolution flexible pressure film sensor of 254DPI, solves the problem of low density of traditional piezoelectric film arrays, improves pressure sensing performance and detection resolution, and enhances the flexibility and adherence of the piezoelectric film.
Owner:ZHEJIANG UNIV

Intelligent battery life prediction method depending on early characteristics

The invention discloses an intelligent battery life prediction method depending on early-stage characteristics, and the method comprises the steps: implanting an optical fiber sensor, a thin film sensor or a pressure sensor in a lithium ion battery, and obtaining the internal state information, such as internal strain and internal temperature, of a battery formation and early-stage circulation stage in real time. A battery multi-dimensional feature database containing early internal state features is constructed by combining the external voltage and capacity of the same period, and the internal association between the early internal parameter features and the long-term cycle life of the battery is explored by using an artificial intelligence algorithm to realize life prediction. According to the method, the limitation that the service life is predicted by depending on long-term cycle data or external sensing traditionally is broken through, early-stage accurate prediction of the health state of the battery is realized, and a brand new technical means is provided for production screening, echelon utilization and full-life-cycle management of the battery.
Owner:BEIJING INST OF TECH

Space micro-debris monitoring micro-nano satellite based on double-layer thin film sensor

A kind of space micro debris monitoring micro-nano satellite based on double-layer film sensor.The satellite carries out bidirectional verification through non-vision in-situ measurement of double-layer film sensor and visual measurement of monitoring camera, carries out monitoring on space micro debris with size less than 1 cm, obtains data information such as velocity vector of debris, and provides real-time and accurate micro debris cloud data.The normal direction of satellite film is the same as the direction of satellite speed, which increases the probability of collision monitoring between satellite and space micro debris.The folding and unfolding mechanism adopted by the present application has small folding volume and is convenient to unfold, and can be used as a debris monitoring device and satellite de-orbit device commonly installed in micro-nano satellite module, and has double functions.The locking-releasing mechanism adopted by the present application can realize locking of the whole mechanism only by using small pre-tightening force, and the design of burning rope release can reduce the separation impact to the minimum, and improve the stability and safety of the system.
Owner:BEIHANG UNIV

Sensor packaging structure and ultrasonic gas flowmeter

The invention provides a sensor packaging structure and an ultrasonic gas flowmeter. The ultrasonic gas flowmeter comprises a sensor structure and an acoustic structure. The sensor packaging structure comprises one or more thin film sensors, an interconnection layer and an interface layer. On one hand, the sensor structure and the acoustic structure are separately designed and are connected through the interface layer, so that the film sensor can be independently manufactured, and the production efficiency is improved. On the other hand, due to the double-layer stacked structure of the two PCB layers, the interconnection layer provides enough rigidity and support, circuit connection and mechanical interface functions are achieved together with the interface layer, and the structure is stable. And on the other hand, the total packaging thickness is smaller than the thickness of the acoustic structure, so that when the packaging structure is mounted at the inlet of the acoustic structure, the surface of the vibrating diaphragm of the thin film sensor does not contact or collide with the inner wall of the acoustic structure, sensor damage caused by mechanical stress is avoided, sound waves can enter an acoustic channel without hindrance, and the reliability of the sensor is improved. And normal operation of the film sensor is ensured.
Owner:SHANGHAI MAILONG TECH CO LTD

Universal high-precision fixed-point static recognition detection box, electronic nose and control method thereof

The invention discloses a general high-precision fixed-point static recognition detection box, an electronic nose and a control method thereof, and the electronic nose comprises the general high-precision fixed-point static recognition detection box and a filter assembly. By adopting the high-precision universal static recognition detection box, the electronic nose and the control method thereof, the type of each gas detection film sensor can be adaptively adjusted according to the type of the detected gas and the detection environment; the position of the detection space can be adjusted, so that the operation convenience is greatly improved; the detection space can be equivalent to the effect of multiple redundant tests through one test; meanwhile, when the detected gas is sucked into the detection space, the detected gas can be filtered through the corresponding filters in sequence, and interference gas and impurities are filtered out; the filter element of each stage of filter has self-checking and self-cleaning functions; the ratio of detected gas can be compressed, so that the detection requirements of some specific rarefied gas are met; the whole device is extremely compact, and the application requirements of miniaturization and modularization are met.
Owner:SOUTHWEST UNIV

Dual-wavelength femtosecond laser direct-writing miniaturized precursor ceramic high-temperature thin film sensor

The invention discloses a dual-wavelength femtosecond laser direct-writing miniaturized precursor ceramic high-temperature thin film sensor, and relates to the technical field of high-temperature thin film sensor manufacturing. Depositing the precursor functional slurry on the surface of a substrate layer by layer by adopting additive manufacturing processes such as blade coating, direct writing and the like, and performing pyrolysis to form an amorphous ceramic multilayer film; based on a dual-wavelength femtosecond laser micro-nano processing platform, the device comprises 1035nm / 343nm double light sources, a light path transmission system and a motion platform, and the characteristics of femtosecond laser ultrashort pulse and high peak power density are utilized to realize submicron precision graphical processing of a precursor ceramic film. And the area of the high-temperature film sensor unit is reduced from the square millimeter level of the traditional process to the square micron level. The method has the advantages of dual-wavelength laser collaborative processing, multi-layer film compatibility and the like, overcomes the disadvantages of large size and poor forming precision of a traditional additive manufacturing precursor ceramic film sensor, and provides a new normal form for integrated manufacturing of a micro sensor array serving in an extreme environment.
Owner:XIAMEN UNIV

A piezoelectric thin film sensor

The present application relates to the technical field of sensor, in particular to a piezoelectric film sensor, which comprises a piezoelectric film, a sensor substrate, upper and lower electrodes respectively arranged on the upper and lower surfaces of the sensor substrate, electrode lead-out structures respectively arranged on the side edges of the upper and lower electrodes, each electrode lead-out structure being located on the same side of the sensor substrate and on the same horizontal plane of the sensor substrate, and a mass block arranged on the piezoelectric film, the piezoelectric film being connected to an external printed circuit board, the mass block being located in a groove of the printed circuit board, and the electrode lead-out structures being connected to the bonding pads of the printed circuit board through connectors; the piezoelectric film sensor can be miniaturized on the printed circuit board, the complexity of the sensor structure is reduced, the limitation on the mounting tolerance and the device tolerance is reduced, and the cost of the device is reduced.
Owner:SHANGHAI JUSHEN TECH CO LTD

Pressure detection sensor and two-wheeled vehicle

The utility model relates to the technical field of pressure detection, in particular to a pressure detection sensor and a two-wheeled vehicle, and the pressure detection sensor comprises a mounting piece, a matching piece and a sensor, the mounting piece can be mounted on an external component; the matching piece is connected with the mounting piece; the sensor is attached to the matching piece; when the matching piece is pressed, the matching piece deforms, and the sensor can detect the deformation quantity of the matching piece so as to output a pressure value. The two-wheeled vehicle comprises the pressure detection sensor. Compared with a thin film sensor which needs to additionally modify the structure of an external part to adapt to installation and use of the thin film sensor and needs to transmit pressure to the thin film sensor to enable the thin film sensor to deform so that the size of the thin film sensor has a requirement, the thin film sensor has the advantages that the external pressure is converted into deformation of a matching part; according to the pressure detection device, the deformation of the matching part is detected through the sensor so as to output the pressure value, pressure detection is achieved, the applicability is better enhanced, and the use cost is reduced.
Owner:BEIJING NIU TECH CO LTD +1

A piezoelectric thin film sensor algorithm calibration system and application thereof

The application discloses a piezoelectric film sensor algorithm calibration system and application thereof, and particularly relates to the technical field of sensors, which comprises a pressure input unit, an output end of the pressure input unit is electrically connected with an input end of a sensor unit, an output end of the sensor unit is electrically connected with an input end of a pressure acquisition unit, an input end of the pressure acquisition unit is electrically connected with an output end of the pressure input unit, and an output end of the pressure input unit is electrically connected with an input end of a waveform processing unit. The application adopts the waveform processing unit to realize the oscillation caused by the dispersion effect in the shock wave waveform in the pressure input process, so that the waveform has obvious wave peaks, the impact force in the input process is more accurate, the influence of the chaotic waveform on the input pressure value measurement is reduced, the calibration algorithm is adopted to realize the rapid calibration process of the sensor itself, and the accuracy calibration confirmation when leaving the factory and the re-calibration after the sensor maintenance are realized.
Owner:RIZHAO XINDONG SENSING TECHNOLOGY CO LTD

Thin film sensor detection device for tooth adjacent surface contact area

The invention belongs to the technical field of tooth adjacent surface contact area detection, and particularly discloses a tooth adjacent surface contact area thin film sensor detection device which comprises a thin film pressure sensor module, a data acquisition module, a signal processing module, a display module and a data storage and transmission module. The signal processing module is respectively connected with the data acquisition module, the display module and the data storage and transmission module; the thin film pressure sensor module is of an array structure composed of a plurality of sub-sensors, and each sub-sensor has a unique position code and is used for collecting pressure signals of a tooth adjacent surface contact area and outputting resistance change signals with position information. The problems that an existing sensor array cannot form a high-precision shape contour, cannot be spliced into a continuously measurable contact shape and cannot output shape parameters of a tooth adjacent surface contact area, and the requirements of orthodontics, repair and the like for accurate design of the adjacent surface contact shape are difficult to meet are solved.
Owner:THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL

A method and system for online monitoring of fiber pressure bearing during composite material molding process

This invention discloses a method and system for online monitoring of fiber pressure bearing during composite material molding, belonging to the field of composite material molding and preparation. The method includes: S1, embedding an online fiber pressure bearing monitoring sensor into the interlayer of the composite material to be monitored; the online fiber pressure bearing monitoring sensor is a porous conductive network thin-film sensor with piezoresistive effect; S2, applying pressure in the thickness direction of the composite material during molding; S3, monitoring the resistance change of the online fiber pressure bearing monitoring sensor to reflect the change in fiber pressure bearing during the composite material molding process. This invention eliminates the influence of resin pressure on the sensor signal output during composite material molding, achieving accurate online monitoring of fiber pressure bearing during the composite material molding process. Furthermore, the monitoring process does not affect the molding process or quality of the composite material, and does not reduce the service performance of the molded composite material, or even improve the interlayer mechanical properties.
Owner:HUAZHONG UNIV OF SCI & TECH

Preparation method and application of photonic crystal hydrogel film sensor with elastic modulus self-reporting function

PendingCN122360751ACell adhesionBiomechanics
This invention discloses a method for fabricating a photonic crystal hydrogel film sensor with a self-reporting elastic modulus function and its application. The method involves fabricating a hydrogel film with a periodic photonic crystal structure and constructing a bio-interface on its surface that can dynamically regulate cell adhesion, detachment, spreading, migration, proliferation, and differentiation. An optical imaging system is used to acquire images of the structural color changes of the photonic crystal hydrogel film. Image processing extracts color parameters, which are then converted into changes in reflected wavelength and the film deformation field. The elastic modulus of the film is calculated by inverting the deformation field generated by microspheres of known mass placed on the film surface, combined with an elasticity model. By combining the cell-interface interaction deformation field, the cell-interface interaction force and its spatial distribution can be obtained. A photonic crystal hydrogel film sensor with a self-reporting hardness function is constructed. This method achieves integrated biomechanical research combining dynamic regulation and real-time monitoring, offering advantages such as non-destructive operation, real-time imaging, and acquisition of mechanical spatial distribution.
Owner:JIANGSU UNIV

Packaging structure and packaging equipment of platinum resistance thin film sensor

The application provides a packaging structure and equipment of a platinum resistance thin film sensor, and relates to the technical field of temperature sensors. The inner top of a packaging shell is fixedly provided with a protective cylinder, the top of the protective cylinder is provided with a top ring, the bottom of the packaging shell is provided with a bottom ring, the inner top ring is provided with a spacing ring, the inner bottom ring is provided with a closing ring, a positioning assembly is arranged between the spacing ring and the closing ring, the inner positioning assembly is provided with a platinum resistance probe, the top of the platinum resistance probe is provided with a driving rod, the inner driving rod is provided with a wire, and one side of the packaging shell is provided with a mounting assembly. The device is provided with a packaging shell and a protective cylinder, can play a multi-layer protection role on the platinum resistance probe, prolongs the service life of the platinum resistance probe, reduces damage caused by the external environment, and ensures stability and reliability in long-term use.
Owner:WUXI ZHONGSHI SENSOR TECH CO LTD

Coating system for use as thin film sensor exhibiting enhanced sensitivity

A coating system to be used as thin film sensor includes a piezoresistive sensor element. The piezoresistive sensor element is a layer embedded in the coating system. The coating system is deposited on a surface of a substrate. The piezoresistive sensor element comprises at least one hydrogen free tetrahedral amorphous carbon coating doped with a ta-C:X coating layer, where X is one or more chemical elements selected from the elements groups 13 and 15 of periodic table of elements, wherein the ta-C:X coating layer exhibits an anisotropic gage factor.
Owner:OERLIKON SURFACE SOLUTIONS AG PFAFFIKON

Multifunctional conductive sponge, flexible pressure sensor and preparation method and application of multifunctional conductive sponge and flexible pressure sensor

The invention discloses a multifunctional conductive sponge, a flexible pressure sensor, and preparation methods and applications of the multifunctional conductive sponge and the flexible pressure sensor. The preparation method of the functional conductive sponge comprises the following steps: uniformly mixing nano-crystalline cellulose, nano-graphite flakes and a solvent, putting the sponge into aerogel precursor liquid for dipping treatment, then drying at a high temperature, putting the sponge into the aerogel precursor liquid for dipping treatment again, then pre-freezing, and then freeze-drying to obtain a composite elastomer of aerogel and the sponge; the composite elastomer of the aerogel and the sponge is placed in a PDMS impregnant to be subjected to impregnation treatment, then high-temperature drying is conducted, and the multifunctional conductive sponge is obtained. According to the invention, common polyurethane sponge is used as a base material of the sensor, and a pressure sensing device and a furniture filling material are integrated, so that the sensor has excellent flexibility, compressibility, large porosity and air permeability, and the problems of damage pressure relief and damp-heat blocking caused when a traditional film sensor and a fabric sensor are used for an intelligent bed are solved.
Owner:ANHUI AGRICULTURAL UNIVERSITY

Noble metal COF-LZU MOS quantum grain carbon nanotube composite film sensor and preparation method

The application discloses a kind of noble metal COF-LZU MOS quantum grain carbon nanotube composite film sensor and preparation method, the composite film with carbon nanotube as substrate, metal oxide semiconductor quantum grain, covalent organic framework compound COF-LZU and noble metal are sequentially loaded on substrate, the sensor with sensor device as substrate, noble metal COF-LZU MOS quantum grain carbon nanotube composite film is deposited on the surface of substrate, and can be used to detect acetone.The application uses noble metal COF-LZU MOS quantum grain carbon nanotube composite film as sensitive layer and applies in acetone (CP) gas-sensitive sensor, the composite film has low working temperature, high sensitivity to gas, high selectivity to acetone, good repeatability, good stability, low cost, simple preparation method, and can be mass-produced.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Exoskeleton fingertip integrating fingertip sensing function and vibration feedback capability

The invention discloses an exoskeleton fingertip integrating a fingertip sensing function and a vibration feedback capability. The exoskeleton fingertip can provide stable fingertip pressing force sensing and corresponding vibration feedback capability. The fingertip interaction force sensing part of the fingertip is composed of a hard fingertip pressing plate, a soft silica gel gasket and a group of piezoresistive film sensor arrays, and the vibration feedback part of the fingertip module is provided with vibration feedback by a vibration motor. By controlling the frequency, the amplitude and the duty ratio of the vibration motor, the simulation of the feeling of tangential force, sliding speed, textures during interaction and the like is realized respectively. According to the design, more stable fingertip force and touch feedback can be provided for the hand exoskeleton, so that more stable and finer hand teleoperation is performed, and the experience feeling of an exoskeleton user is improved.
Owner:ZHEJIANG UNIV

Electrocardiogram processing method and device based on wearable film sensor

The embodiment of the invention provides an electrocardiogram processing method and device based on a wearable thin film sensor, the wearable thin film sensor comprises a main sensor and an auxiliary sensor, and the method comprises the steps that original electrocardiosignals of a single channel collected by the main sensor are obtained, and original electrocardiosignals of the single channel collected by the auxiliary sensor are obtained; the method comprises the following steps: synchronously acquiring an auxiliary reference signal which interferes with an original electrocardiosignal, performing interference correction on the original electrocardiosignal based on the auxiliary reference signal to obtain a target electrocardiosignal, performing spatial-temporal feature extraction on the target electrocardiosignal based on a pre-trained deep learning model to obtain spatial-temporal features, and outputting the spatial-temporal features. And performing lead mapping processing on the spatial-temporal characteristics to obtain a standard lead electrocardiogram. Therefore, the high-quality electrocardiogram is generated based on the single-channel electrocardiosignal, the accuracy of reconstructing the standard lead signal is improved, and the convenience and accessibility of electrocardiogram monitoring are improved.
Owner:HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)

Embedded rolling bearing having source-end parameter acquisition system, and manufacturing method for embedded rolling bearing

An embedded rolling bearing having a source-end parameter acquisition system. The embedded rolling bearing comprises: a bearing (6), an accommodating recess being provided on an outer peripheral surface of the bearing (6); a thin-film sensor assembly (1), which is formed in the accommodating recess and comprises a PDC-ITO strain element (12), a PDC-Pt temperature element (13), a PDC-PZT piezoelectric thin film (14) and a plurality of bonding pads (11) respectively matching the PDC-ITO strain element (12), the PDC-Pt temperature element (13) and the PDC-PZT piezoelectric thin film (14); an acquisition microstructure (3), which is arranged in the accommodating recess and comprises a PCB and a functional chip formed on the PCB and electrically connected to the plurality of bonding pads (11) by means of a plurality of electrical interconnection sockets (2); a thermal-insulation potting adhesive (4), which is poured into the accommodating recess; and a metal cover (5). Further provided is a manufacturing method for the embedded rolling bearing having a source-end parameter acquisition system. The drawbacks of restrictions on the shape and size of conventional external sensors and collectors are avoided.
Owner:AVIC TOUCHSTONE TESTING TECHNOLOGY (DACHANG) CO LTD

Lipstick shell pressure sensing anti-collision buffer layer

The utility model relates to the technical field of lipstick shells, and discloses a lipstick shell pressure sensing anti-collision buffer layer which comprises an outer layer assembly, a middle layer assembly penetrates through the inner side of the top of the outer layer assembly, a fixing cylinder penetrates through the inner side of the middle layer assembly, a spiral assembly penetrates through the inner side of the fixing cylinder, and the spiral assembly penetrates through the inner side of the middle layer assembly. The inner side of the spiral assembly penetrates through and is slidably connected with a limiting assembly, and the bottom of the inner side of the limiting assembly penetrates through and is slidably connected with a lifting assembly. The buffer holes are formed in the side wall of the shell of the middle layer assembly, so that impact force can be effectively dispersed, and local pressure is reduced; the buffer assembly and the pressure-sensitive film sensor between the outer layer assembly and the middle layer assembly can accurately sense the change of external pressure and make a response rapidly, the STF composite material is soft in a normal state, does not affect use, is instantly hardened under pressure, efficiently absorbs and disperses impact force, protects the internal structure of the lipstick shell and the lipstick paste in an all-round mode, and is safe and reliable. And the daily collision resistance of the lipstick is improved.
Owner:HUAIAN JUNDA METAL PRODUCTS CO LTD