1155results about "Force measurement using piezo-resistive materials" patented technology

The invention relates to the field of pressure sensors, in particular to a pressure sensor and a processing method, and a chip comprises a silicon substrate, a silicon dioxide dielectric layer, a device layer, a metal electrode and packaging glass. The device layer comprises a silicon carbide single crystal device layer and a silicon device layer; the silicon carbide single crystal device layer is arranged on the silicon device layer; the silicon device layer, the silicon dioxide dielectric layer and the silicon substrate are connected in sequence; the device layer is etched to form a sensitive resistor device layer, an annular sealing region and a micro-channel; the sensitive resistance device layer is isolated from the annular sealing area through the micro-channel; the device layer, the silicon dioxide dielectric layer and the silicon substrate are etched to form a cross beam etching area; the silicon substrate is etched to form a silicon pressure cavity and a beam film; the metal electrode is arranged on the top of the device layer; and the packaging glass anode is bonded at the top of the device layer or the bottom of the silicon substrate so as to solve the problems of low high temperature resistance and low sensitivity of the MEMS pressure sensor.

The invention discloses an ultrasonic enhanced tactile sensor system, a sensor and a sensing method. The tactile sensor system comprises a multi-mode sensing unit and a processing unit. The multi-mode sensing unit integrates an ultrasonic module and a visual tactile sensing module, ultrasonic acoustic impedance matching and optical imaging transmission are achieved through an acousto-optic matching structure, and ultrasonic echo signals and tactile deformation images can be synchronously collected. In the processing unit, an event triggering module detects a contact event based on a tactile image and generates a switching signal, and a self-adaptive processing module dynamically controls an ultrasonic mode, distance measurement during non-contact, and switching to object internal imaging or material property identification during contact according to the switching signal. And the three-level fusion processing module outputs a multi-modal sensing result through signal-level synchronous acquisition, feature-level cross-modal fusion and decision-level task switching. According to the system, multi-dimensional perception of proximity sense, surface texture and deep information is realized, and the pre-judgment and accurate operation capability of the robot in a complex scene is improved.

The invention belongs to the technical field of flexible sensing, and discloses a flexible piezoresistive sensing array based on a triangular truss grid structure weft knitting spacer fabric, which is of a five-layer composite structure integrally woven and formed through a weft knitting process. The first packaging layer, the first electrode layer, the spacer fabric spacer layer, the second electrode layer and the second packaging layer are sequentially arranged from top to bottom; the first packaging layer and the second packaging layer are formed by weaving insulating yarns and are respectively an upper surface layer and a lower surface layer of the spacer fabric; the spacer fabric spacer layer is of a three-dimensional elastic supporting structure and comprises a plurality of first spacer layer transverse rows and a plurality of second spacer layer transverse rows which are formed by alternately weaving the upper face layer and the lower face layer of the spacer fabric through tucking. The first spacing layer transverse rows and the second spacing layer transverse rows are arranged in the spacing fabric in a staggered mode and are sequentially connected end to end to form a transverse row crossing cross-linked type triangular truss grid structure. The flexible piezoresistive sensing array provided by the invention has high structural integrity and long-term stability.

The invention discloses a PDMS / MWCNTs flexible resistive pressure sensor with a double-layer corrugated structure and a preparation method of the PDMS / MWCNTs flexible resistive pressure sensor, and belongs to the technical field of flexible piezoresistive sensors. The PDMS / MWCNTs flexible resistive pressure sensor with the double-layer corrugated structure sequentially comprises a silica gel packaging layer, a copper foil, a PDMS / MWCNTs conductive thin film with a high-amplitude corrugated structure, a PDMS / MWCNTs conductive thin film with a low-amplitude corrugated structure, a copper foil and a silica gel packaging layer from top to bottom, the cross section of the PDMS / MWCNTs conductive thin film with the high-amplitude corrugated structure and the cross section of the PDMS / MWCNTs conductive thin film with the low-amplitude corrugated structure are both in a wave shape, and the wave length of the wave shape of the PDMS / MWCNTs conductive thin film with the high-amplitude corrugated structure is the same as that of the wave shape of the PDMS / MWCNTs conductive thin film with the low-amplitude corrugated structure. And the wave height of the wave shape of the PDMS / MWCNTs conductive thin film with the high-amplitude corrugated structure is higher than that of the wave shape of the PDMS / MWCNTs conductive thin film with the low-amplitude corrugated structure. The flexible resistance type pressure sensor realizes high linearity and good sensitivity in a wide pressure range, has excellent mechanical stability, rapid responsiveness and good durability, and has great potential in the fields of human wearable health monitoring, motion detection and the like.

The invention provides a warp-knitted interval sensing fabric and a preparation method and application thereof, a pressure sensor, a pressure sensing foot pad and a plantar pressure value acquisition system, and belongs to the technical field of flexible sensors. The warp-knitted interval sensing fabric comprises an electrode layer, a monofilament interval layer and a sensing layer which are sequentially laminated; the warp-knitted interval sensing fabric is of an integrally formed structure; the electrode layer is provided with a full-penetrating double-comb structure and comprises a plurality of conductive strips which are arranged in parallel, and an insulating strip is arranged between every two adjacent conductive strips; the monofilament spacing layer is formed by mutually connecting fiber coils, and the electrode layer and the sensing layer are connected through the fiber coils; the sensing layer has a full-penetration double-comb weave and is obtained by weaving sensing yarns. According to the warp-knitted spacer sensing fabric pressure sensor, the electrode layer, the monofilament spacer layer and the sensing layer are integrally formed, the process is simple, the cost is low, and large-scale production and practical application are facilitated.

The invention belongs to the field of MEMS sensors, and particularly relates to a low-temperature-drift MEMS resonant pressure sensor sensitive chip and a preparation method thereof. Comprising a cap layer, a resonance layer, a pressure sensing layer and an isolation base which are sequentially bonded and connected from top to bottom, the cap layer is provided with an electrode through hole and a vacuum cavity groove, and a getter is sputtered in the vacuum cavity groove; two Si-SiO2 composite resonators and a plurality of lead wire discs are arranged on the resonance layer, and a metal electrode is arranged on each lead wire disc; the number of the metal electrodes is equal to that of the cap layer electrode through holes, and the metal electrodes are located under the electrode through holes; two groups of silicon islands are arranged on the front surface of the pressure sensing layer, and three rectangular sensitive films with the same size are arranged on the back surface; the isolation base is a glass table; according to the invention, the output sensitivity of the sensor is greatly improved, the chip processing complexity is reduced, and the introduction of additional stress and materials is reduced.

The subject invention is concerned with systems and methods advantageously applying finite element analysis to establish design rules for a highly sensitive piezo-resistive pressure sensor with an output that is high enough to be detectable by simple and inexpensive circuits and therefore ensure wearability. Four frequently reported micro-feature shapes in micro-patterned piezo-resistive sensors are provided, where the micro-dome and micro-pyramid yield the highest sensitivity. Investigations of different conductivity values of micro-patterned elastomers show that coating the elastomer with a conductive material (e.g., a metallic coating) leads to higher current response when compared to composited conductive elastomers. Advantageous geometric parameters and spatial configurations of micro-pyramid design of piezo-resistive sensors are provided. Results show that an enhanced sensitivity and higher current output can be achieved by a lower spatial density configuration of three micro-features per millimeter length, a smaller feature size of around 100 μm, and a 60-50 degrees pyramid angle.

The present application belongs to the technical field of flexible sensing, and discloses a flexible piezoresistive sensing array based on a triangular truss grid structure weft-knitted spacer fabric, which is a five-layer composite structure integrally formed through a weft-knitting process, and sequentially comprises a first encapsulation layer, a first electrode layer, a spacer fabric spacing layer, a second electrode layer and a second encapsulation layer from top to bottom; the first encapsulation layer and the second encapsulation layer are knitted from insulating yarns and serve as upper and lower layers of the spacer fabric respectively; the spacer fabric spacing layer is a three-dimensional elastic support structure, and comprises a plurality of first spacer layer courses and a plurality of second spacer layer courses alternately knitted through tuck stitches on the upper and lower layers of the spacer fabric; the first spacer layer courses and the second spacer layer courses are staggered with each other in the spacer fabric and are sequentially connected at the head and tail to form a triangular truss grid structure in a cross-course crosslinking mode. The flexible piezoresistive sensing array of the present application has high structural integrity and long-term stability.

A flexible three-dimensional pressure sensing device disclosed by the present invention comprises a force sensitive part, three-dimensional conduction parts and electrodes, the force sensitive part is composed of a whole piece of flexible conductive material, the flexible conductive material has piezoresistive characteristics, a plurality of three-dimensional conduction parts are distributed on the surface of the force sensitive part, and the three-dimensional conduction parts are used for conducting pressure to the force sensitive part. The pressure comprises normal pressure and shear pressure, a plurality of electrodes are arranged on the periphery of the force sensitive part, and the electrodes are used for leading out resistance distribution data of the force sensitive part through wires; and the rear-end circuit equipment calculates the three-dimensional pressure distribution information of each position on the surface of the flexible three-dimensional pressure sensing equipment at each moment according to the resistance distribution data. On the basis, the flexible three-dimensional pressure sensing equipment can improve the three-dimensional sensing capability, simplify the equipment structure, reduce the manufacturing difficulty and cost, improve the flexibility of the equipment and expand the application scene of the equipment.

A pressure distribution monitoring flexible planar mat system with a wide pressure measuring range. The flexible planar mat includes a first electrode layer and a first composite piezoelectric-dielectric layer with a second composite piezoelectric-dielectric layer facing the first layer and a second electrode layer. Each of the first and second composite piezoelectric-dielectric layers includes an elastomeric matrix with conductive and dielectric particles embedded therein. The relative size of the conductive particles and the dielectric particles creates a micro-rough interface between these layers and the electrode layers resulting in a range of contact areas, permitting detection between 0 and 3000 kPa. The flexible planar mat system further includes a data collector that collects a pressure signal from the mat. A pressure distribution data processor receives and calculates data from the data collector and creates a two-dimensional pressure map from the flexible planar mat.

The invention relates to the field of signal conditioning of piezoresistive pressure sensors and provides a passive resistance network temperature compensation method for a piezoresistive pressure sensor in order to solve the problem that in a high-temperature test environment, the bridge output zero position and the sensitivity voltage of a sensitive chip of the pressure sensor drift along with the change of the test temperature, and the measurement precision is affected. A low-temperature-coefficient resistance network compensation model is adopted, a corresponding compensation model is selected according to positive and negative normal-temperature initial zero voltage of the piezoresistive pressure sensor, and bridge zero temperature drift compensation and bridge sensitivity temperature drift compensation are achieved through the compensation model. According to the piezoresistive pressure sensor, the output voltage of the piezoresistive pressure sensor does not change along with the temperature under the loading of the initial pressure, and the output voltage of the piezoresistive pressure sensor does not change along with the temperature under the loading of the variable pressure. Influences such as residual stress of piezoresistive pressure sensor packaging and parameter offset of a bridge itself are overcome, and high-precision temperature compensation is realized.

The invention provides a data error compensation method for a biological net port flowmeter, and belongs to the technical field of ocean detection. A multi-dimensional sensor is arranged at a biological net port to collect fluid parameters, a deep learning model is used for recognizing multi-phase flow characteristics, and a corresponding compensation strategy is selected; based on a correlation analysis algorithm, compensation processing frequency is dynamically adjusted to achieve self-adaptive balance of precision and efficiency, the flow state change degree is monitored through the Euclidean distance, compensation parameters are hierarchically adjusted to ensure system stability, a parallel processing architecture is adopted to execute coarse compensation and fine compensation algorithms at the same time, and results are fused according to weights. Finally, dynamic and accurate compensation of the measurement error of the biological net port flowmeter in the complex multiphase flow environment is achieved, and the technical problem that in the prior art, the biological net port flowmeter cannot achieve dynamic and accurate error compensation in the complex multiphase flow environment is solved.

A composite structure for a pressure sensor, a pressure sensor, a method of pressure sensing using the pressure sensor, and a method of fabricating a composite structure for a pressure sensor. The method of fabricating a composite structure for a pressure sensor comprises the steps of forming an array of microstructures made from an elastomeric material; and forming a flexible conductive coating on the array of microstructures such that a surface morphology of microstructures is substantially maintained for the coated array of the microstructures; wherein the conductive coating exhibits a Young's modulus that is higher than that of the elastomeric material.

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

The invention belongs to the technical field of flexible sensors, and particularly discloses a flexible sensor of a multi-layer porous net structure and a preparation method of the flexible sensor, and the flexible sensor comprises a functional layer and two flexible packaging layers. The functional layer is arranged between the two flexible packaging layers, the functional layer comprises a plurality of porous sensing structures which are arranged in a laminated manner, and each porous sensing structure comprises a nanometer latticed supporting layer and a sensing layer which are arranged in a laminated manner; the surfaces, connected with the functional layer, of the two flexible packaging layers are each provided with a protrusion array. The sensor has a wide mechanical response range while high sensitivity of the sensor is maintained, is good in flexibility, ultrathin, small in size and light in weight, hardly affects mandibular movement, can accurately monitor occlusal force, hardly causes inconvenience to muscle joint movement of a human body, and is suitable for popularization and application. And the flexibility is maintained under various mechanical deformations such as distortion, stretching or compression, and the multi-axial force can be detected.

The invention relates to the technical field of sensors, in particular to a three-electrode sensor integrating positioning and pressure detection and a manufacturing method thereof, and the three-electrode sensor comprises a resistor positioning unit, a gasket, a piezoelectric unit and a packaging layer which are connected in sequence; wherein the resistor positioning unit is used for detecting a stressed position; the upper parts of the two gaskets are respectively connected to the edge of the resistor positioning unit, and the lower parts of the two gaskets are respectively connected to the edge of the piezoelectric unit, so that the resistor positioning unit and the piezoelectric unit form a cavity structure; the piezoelectric unit is used for detecting the magnitude of stress; the sensor can collect the pressure position and the pressure magnitude at the same time, has the advantages of being simple in structure, independent in signal and stable in performance, and has great application potential in multiple frontier fields such as flexible sensing, medical instruments and robot grabbing.

This invention relates to a coating system to be used as thin film sensor, comprising a piezoresistive sensor element, wherein the piezoresistive sensor element is a layer embedded in the coating system, wherein the coating system is deposited on a surface of a substrate, preferably the substrate being a component or a tool or a part of a component or a part of a tool, wherein the piezoresistive sensor element comprises at least one hydrogen free tetrahedral amorphous carbon coating doped with X, i.e. a ta-C:X coating layer, where X is one or more chemical elements selected from the elements groups 13 and 15 of the periodic table of elements, preferably X is one or more from B, Al, Ga, In, Tl, N and P, wherein the ta-C:X coating layer exhibits an anisotropic gage factor.

The invention discloses a sensitivity-amplified strain gauge and a sensor elastomer stress detection method, and belongs to the technical field of sensors, the sensitivity-amplified strain gauge comprises a sensitive part, and the outer side of the sensitive part is connected with a rigid support; the sensitive part comprises a substrate, a piezoresistor and an electrode assembly which are sequentially arranged from bottom to top, the piezoresistor comprises four sensitive grids, the two ends of each sensitive grid are connected with pins, each pin is shared by two adjacent sensitive grids, and the four sensitive grids have the same resistance value and are symmetrically arranged. Sensitivity can be further improved, miniaturization is facilitated, and measurement of local small strain is achieved.

The invention is about a sensor assembly comprising, on an active part (621, 622), an assembly of conductive nanoparticles (560) in an insulating ligand, a substrate on which conductive tracks (611, 612, 613, 650, 651) and the assembly of nanoparticles are deposited, a thin stiffener (630) extending under the active part, glued to the substrate by a hardening glue on a first face of the thin stiffener and a pressure-sensitive adhesive attached to a second face of the thin stiffener (630), opposite the first face, configured for bonding the miniature sensor to a surface to be functionalized. The invention also relates to a method for manufacturing of such a sensor assembly.

The invention relates to the technical field of sensors, and provides a flexible pressure sensor and a pressure-sensitive fabric, the flexible pressure sensor comprises the pressure-sensitive fabric, the pressure-sensitive fabric is provided with a pressure detection position for detecting a pressure signal, and the pressure-sensitive fabric is formed by weaving a composite conductive filament and a first non-conductive filament, the composite conductive wire is obtained by doubling a conductive wire and a second non-conductive wire, and the conductive wire is prepared from a conductive material and a base material; the processor is connected with the pressure detection positions and used for processing the pressure signals of the pressure detection positions and outputting pressure distribution information on the pressure-sensitive fabric according to the pressure signals corresponding to the pressure detection positions. According to the pressure sensor provided by the embodiment of the invention, the pressure-sensitive fabric has the characteristics of bending resistance, impact resistance and electric conductivity which is not easily influenced by the environment, and the consistency of the pressure-sensitive fabric is improved, so that the precision of the pressure sensor in various environments is improved.

A sensing structure and a method of fabricating a sensing structure for a compressive-type pressure sensor. The method comprises the steps of providing an elastic micropatterned substrate defining a plurality of 3-dimensional microstructures, each microstructure comprising a tip portion pointing away from the substrate in a first direction; forming a conductive film on the elastic micropatterned substrate such that the 3-dimensional microstructures are substantially covered by the conductive film; and forming cracks in the conductive film in areas on 3-dimensional microstructures.

The invention relates to hydrogel for motion monitoring and / or drug delivery as well as a preparation method and application thereof, and relates to the technical field of new materials. The hydrogel is double-network hydrogel, and the double-network hydrogel comprises a first network, a second network and a cross-linking agent, the first network is mainly constructed from an N-hydroxyethyl acrylamide-beta-(acryloyloxy) propionic acid copolymer, the second network is mainly constructed from carboxylated cellulose nanofibers, and the cross-linking agent comprises zirconium ions. The hydrogel can realize motion monitoring and transdermal drug delivery functions, and has excellent mechanical properties.

According to the temperature compensation method and system of the pressure sensor, the temperature compensation precision of the sensor can be improved by combining a hardware and neural network composite method, and the measurement accuracy is improved; and the neural network can process a complex non-linear relationship, so that the temperature compensation characteristic of the sensor can be modeled more accurately. In addition, the neural network is deployed on the FPGA, and due to the parallel computing advantage of the FPGA, the execution speed of the algorithm can be increased; a feedback mechanism is adopted to take sensor output as new training data for adjusting parameters of the neural network model, and the performance of the neural network model can be further optimized to adapt to a new working environment of the sensor.

The invention discloses a preparation method of flexible hydrogel and application of the flexible hydrogel in a pressure sensor, and belongs to the field of flexible sensors. According to the hydrogel disclosed by the invention, polyvinyl alcohol and regenerated cellulose are used as a hydrogel skeleton, and carboxylated carbon black is doped as a conducting medium. The preparation method comprises the following steps: carrying out carbonization treatment on microcrystalline cellulose in a tubular furnace at high temperature to obtain high-conductivity carbon black; then, functional groups are introduced into the carbon black through modification treatment; the method comprises the following steps: dissolving paper pulp in N-methylmorpholine-N-oxide (NMMO), and carrying out cooling, solidification, dialysis and other process treatments to obtain regenerated cellulose; the flexible conductive hydrogel is obtained by adding conductive carbon black and regenerated cellulose into a PVA solution with a certain concentration and introducing sodium tetraborate at the same time. The regenerated cellulose in the hydrogel is rich in a large number of hydrogen bonds, and the flexibility and the self-healing performance of the hydrogel are remarkably improved through the interaction among the hydrogen bonds. The method disclosed by the invention is simple to operate, the prepared hydrogel has better elasticity, self-healing property and conductivity, and the practical application of the hydrogel in the field of flexible sensors is widened.

The invention relates to the technical field of flexible sensors, in particular to a gradient hierarchical porous structure flexible piezoresistive sensor and a preparation method thereof. The sensor is of a laminated structure and comprises an upper flexible packaging protection layer, a lower flexible packaging protection layer, a conductive fabric electrode and a middle piezoresistive sensing layer, and a limiting frame is arranged on the periphery of the sensor. The sensing layer is prepared by adopting a 3D printing ink direct writing technology, and adopted printing slurry takes silicone rubber as a matrix and is uniformly mixed with expanded conductive microspheres and conductive filler. The printing wires are stacked in order to form a macroscopic gradient porous network structure; after the expanded microspheres are subjected to in-situ foaming, micro closed pores are formed in the material, and a rough microstructure is constructed on the surface of the wire material, so that hierarchical multi-scale regulation and control of a conductive network are realized cooperatively, contact sites are increased remarkably, and the sensitivity of the sensor is further improved effectively. The flexible piezoresistive sensor prepared by the invention has the advantages of high sensitivity, wide pressure detection range and high linearity, and has the commercial values of simple preparation process, high repeatability, lower cost and the like.

The invention discloses a piezoresistive pressure sensor chip and a preparation method thereof, and belongs to the technical field of micro-electromechanical systems. The piezoresistive pressure sensor chip comprises a substrate, the back of the substrate is etched with a cavity, the center of the cavity is provided with a cross-shaped mass block, and four hollow islands and four peninsula are arranged along the linear direction of the cross-shaped mass block; a plurality of groups of piezoresistor strips are arranged on the front surface of the substrate, each group of piezoresistor strips comprises a first piezoresistor strip component arranged close to the center and a second piezoresistor strip component arranged close to the side wall of the cavity, and the first piezoresistor strip component forms an internal Wheatstone bridge through a first metal lead group; the second piezoresistor strip component forms an external Wheatstone bridge through a second metal lead group; the glass is arranged on the substrate back. The piezoresistive pressure sensor chip can measure the pressure of a micro-pressure section, can bear high overload equivalent to a plurality of times of the full scale, and has the advantages of high sensitivity, good linearity, high precision, good dynamic performance and the like.

The invention discloses a cable wrapping machine with a wrapping tape gap adjustment function and a cable thereof.The cable wrapping machine comprises a wrapping machine body, a rotating disc is rotationally installed on one side of the wrapping machine body, a pay-off device and an adjusting mechanism are fixedly installed on one side of the rotating disc, and the adjusting mechanism comprises a supporting bottom plate arranged on one side of the rotating disc; a detection assembly and an abutting assembly are arranged on one side of the supporting bottom plate, the detection assembly can detect pressure on the two sides of the wrapping tape, and the abutting assembly can adjust the wrapping tape when the wrapping tape inclines. According to the technical scheme of the invention, through the arrangement of the adjusting mechanism, when a wrapping gap is generated between a wrapping tape and a cable, the detection assembly can rapidly detect the generation of the wrapping gap through the difference between the pressures applied to the two ends of the tension roller, thereby driving the abutting assembly to operate to adjust the gap of the wrapping tape. Therefore, the working efficiency of the wrapping machine and the wrapping effect of the cable are improved.

The invention discloses a monitoring alarm system and method based on multi-modal fusion and regional perception, and the system comprises a multi-source perception module which collects the related data of a patient through a plurality of sensors; the data processing center is used for judging whether an abnormal state occurs or not based on the related data acquired by the multi-source sensing module, and triggering an alarm when the abnormal state occurs; and the notification terminal receives the alarm related information and executes alarm linkage measures. Wherein the data processing center realizes multi-modal data binding of the same patient by using the positioning identification module, so that the position of the patient is accurately positioned; the layered configuration module is used for setting alarm rules according to different patients and different areas. Multiple sensors are adopted for monitoring, the identity and state of a patient are accurately recognized through cross validation of multi-modal data, and the false alarm rate is reduced; a regional division monitoring strategy is adopted, excessive monitoring is avoided on the premise that the monitoring effect is ensured, and resource waste is avoided.

The invention relates to the technical field of underground energy storage, in particular to a gas storage cavern grouting confining pressure real-time monitoring system and method based on the piezoresistive effect, and the system comprises a grouting reinforcement module which is used for injecting grout into a target gas storage cavern and laying a lining to form a grouting reinforcement area; the resistance detection module is used for detecting resistivity distribution characteristics of the grouting reinforcement area in real time; the confining pressure monitoring module is used for analyzing the resistivity distribution characteristics based on a preset piezoresistive modified slurry resistivity-surrounding rock stress relation model to obtain the actual stress state of surrounding rock; and the early warning regulation and control module is used for triggering an early warning signal based on the actual stress state of the surrounding rock and releasing gas. According to the invention, continuous and non-contact measurement of the surrounding rock stress state of the gas storage cavern can be realized.

Disclosed is a device for estimating a load in a bearing, including a receiving unit for receiving a sensor signal waveform. The sensor signal waveform is provided by at least one sensor probe arranged at the bearing. The at least one sensor probe is configured to measure a displacement and / or strain of the bearing. The sensor signal waveform is a product of a carrier waveform and a load waveform, and an electronic control unit configured for processing the received measured sensor signal waveform, by determining a rolling element frequency from the measured sensor signal waveform, determining the carrier waveform based on the determined rolling element frequency and the measured sensor signal waveform, determining the load waveform based on determined carrier waveform and the measured sensor signal waveform, and estimating the load in the bearing from the determined load waveform.