26 results about "Force transducer" patented technology

A user force-application measurement system comprising: a base portion including: at least one cavity defining at least one surface; an upper portion including: at least one plunger assembly operably coupled to a rigid plate; and at least one force transducer. The at least one force transducer may be disposed between the at least one plunger assembly and the at least one surface of the at least one cavity when the at least one plunger assembly is received within the at least one cavity.

This application discloses a sensor assembly, including an insulating substrate comprising a first surface and a second surface disposed opposite to each other; a surface acoustic wave (SAW) pressure sensor disposed on the first surface, the SAW pressure sensor comprising a piezoelectric lithium niobate layer and two pairs of interdigital transducers disposed on the surface of the piezoelectric lithium niobate layer, the piezoelectric lithium niobate layer having a cavity and a corresponding thinned sensitive membrane region, the two pairs of interdigital transducers being disposed around the thinned sensitive membrane region in mutually perpendicular directions; and a platinum resistance temperature sensor and an interdigital capacitance humidity sensor disposed on the second surface. By having the SAW pressure sensor, platinum resistance temperature sensor, and interdigital capacitance humidity sensor disposed opposite to each other on the insulating substrate, combined with the cavity formed on the piezoelectric lithium niobate layer, and the two pairs of interdigital transducers disposed in mutually perpendicular directions, the detection accuracy is improved and crosstalk is reduced.

The application provides a method for detecting the depth of a conduit in concrete, which comprises the following steps: obtaining the medium density of the space between a first pressure sensor and a second pressure sensor on the conduit, and determining the first space position type of the space between the first pressure sensor and the second pressure sensor on the conduit; obtaining the first medium type corresponding to the position of a first vibration sensor and the second medium type corresponding to the position of a second vibration sensor, and determining the second space position type of the space between the first vibration sensor and the second vibration sensor on the conduit; if the first space position type and the second space position type are consistent, determining the first depth information based on the medium density, determining the second depth information based on the vibration signal, and determining the target depth information according to the first depth information and the second depth information. Through the method, the detection reliability can be improved by avoiding the single signal misjudgment, and the depth detection precision is improved by comprehensively calculating the target depth.

A kind of contact force measurement method of load launch process, comprising: step one: install load ring assembly on the mouth piece of launch tube through shear sensor;Step two: adjust the concentricity of load ring assembly and launch tube, adjust the levelness of shear sensor;Step three: set stress measuring element on shear sensor;Step four: hang standard weight on load ring assembly, fit linear variation curve between the signal of stress measuring element and the total mass of standard weight;Step five: place launch tube in water and launch load, obtain the contact force corresponding to load ring assembly by linear variation curve between the signal data of stress measuring element and the total mass of standard weight, accurately measure the contact force between the mouth end of launch tube and load during launch process, provide test data support for the establishment of contact force mathematical model of carrier platform and load separation process, improve the accuracy and reliability of load launch trajectory design.

This utility model relates to the technical field of pile foundation skin friction testing, and discloses a device for rapidly testing the negative skin friction of pile foundations in high-fill mountainous areas. The device includes backfill soil, beneath which lies a strongly weathered rock layer, and below that, a moderately weathered rock layer. A data acquisition system is installed on the left side of the top surface of the backfill soil, and a loading oil pump is installed on the right side. Utilizing the end resistance from the rock foundation load test to provide the reaction force, combined with data from pile stress sensors, the distribution characteristics of negative skin friction on the pile side in high-fill areas can be rapidly and quantitatively analyzed, providing a measured basis for pile foundation bearing capacity assessment and engineering design. This method uses the upward displacement of the pile under the action of a load cell to replace the settlement of the foundation soil, thereby efficiently testing the negative skin friction, significantly reducing testing costs and saving testing time.

The utility model relates to building BIM technique's technical field discloses a kind of monitoring devices of building structure connecting node based on BIM technique, including detection component and field data processing center;Detection component includes first mounting plate and second mounting plate, first mounting plate and second mounting plate between by setting movable component are movably connected to be able to carry out opening and closing action, angle sensor for detecting movable component rotation angle is installed on movable component, first mounting plate and second mounting plate are installed at building connecting node, stress sensor is embeddedly arranged on the outer side wall of first mounting plate and second mounting plate, both sides stress sensor are with the corresponding side side wall at building connecting node and abut;Angle sensor and stress sensor are respectively communicatively connected with field data processing center;The utility model has the advantages of giving full play to the role of BIM technique in building safety management, monitoring effect is good, improves the reliability of building structure.

The present application relates to geotechnical exploration equipment, in particular to an intelligent high-precision geotechnological multifunctional static sounding system and its exploration method. A pore water pressure sensor is installed between the cone tip and the intermediate connecting rod. A cone tip resistance sensor, a sidewall friction sensor and an acoustic emission sensing unit are sequentially arranged from bottom to top between the friction cylinder and the intermediate connecting rod. An inclination sensor, a multi-parameter synchronous acquisition module, a data processing unit and an FPGA control unit are sequentially embedded from bottom to top on the tail connecting rod. The pore water pressure sensor, the cone tip resistance sensor, the sidewall friction sensor, the acoustic emission sensing unit and the inclination sensor are electrically connected with the multi-parameter synchronous acquisition module. The multi-parameter synchronous acquisition module, the data processing unit and the FPGA control unit are electrically connected with the digital-analog conversion device. The digital-analog conversion device is electrically connected with the remote data acquisition device. The present application solves the problems of asynchronous data, spatial dislocation, low interpretation accuracy and single function of the exploration equipment.

This invention provides a low-pressure environment bifurcation tunnel mobile fire source testing system, comprising: a moving slider simulating the movement of a real vehicle within the main tunnel and / or ramps of a bifurcation tunnel to change the fire source location in real time; a pressure sensor detecting the chamber pressure of the combustion chamber in real time, and controlling the chamber pressure by a gas control chamber when there is a difference between the chamber pressure and the target pressure; a purification system controlling the gas concentrations of carbon monoxide and carbon dioxide within the combustion chamber; a data acquisition system collecting flame parameters, smoke parameters, environmental parameters, and temperature parameters; a processor controlling the moving slider to move within the bifurcation tunnel at the start of the test and acquiring the parameters collected by the data acquisition system; and generating an evaluation report of the test process based on the collected parameters at the end of the test. Applying this system allows for testing in a simulated low-pressure environment, and the evaluation report obtained from the test provides data support for fire prevention in low-pressure bifurcation tunnel environments.

The invention relates to a method of determining a mechanical action torque component at a guide point of a cutting blade (L) for a cutting machine, the cutting blade being guided into a presser foot (P) of a cutting head of the cutting machine. The method comprises positioning a five-component force transducer on the presser foot, wherein the five-component force transducer comprises a plurality of sensors capable of determining a normal force, a lateral force, a roll torque, a pitch torque, and a yaw torque of the cutting blade; establishing a calibration matrix of the force transducer; determining forces experienced by the cutting blade in three dimensions based on measurements obtained from the sensors and the calibration matrix.

The present application relates to the field of carbon dioxide pipeline leakage, especially to a test different wind, topography under the carbon dioxide pipeline leakage experimental device, it includes input system, test test system, data acquisition system; Input system includes CO2 storage tank, first ball valve, input pipeline, second ball valve; Test test system includes test section, leakage pipeline, third ball valve, topography model, first pipeline, second pipeline, third pipeline; Data acquisition system includes straight pipe temperature sensor, straight pipe pressure sensor, ambient temperature sensor, CO2 concentration sensor, leakage pressure sensor, leakage temperature sensor and computer. Through the present application, the change of temperature and concentration inside and outside the pipeline after the leakage of the land carbon dioxide pipeline can be understood, different wind and topography conditions can be simulated, the operability and safety can reach the conditions of indoor development, which is helpful for the monitoring of the land carbon dioxide pipeline leakage.

The present application belongs to the technical field of geotechnical engineering test equipment, and relates to an instrument capable of simulating rainfall infiltration slope shear failure and a working method thereof. The instrument comprises a lower shear box and an upper shear box, the lower shear box is in communication with the inside of the upper shear box, the upper shear box is connected with the output end of a shear loading component, an axial loading component is arranged in the upper shear box, the lower shear box and the upper shear box are both communicated with a water supply device, an axial LVDT sensor, a shear LVDT sensor, a plurality of moisture sensors and a plurality of matric suction sensors are arranged, and the moisture sensors, the matric suction sensors, the axial LVDT sensor and the shear LVDT sensor are all connected with a data acquisition system. The present application can simulate the soil strength deterioration caused by the change of groundwater level and the slope shear failure caused by the change of effective stress, can carry out the creep shear failure and the experiment of effective stress reduction, and can realize the shear of the slope surface with different angles. The experimental data are comprehensive, and the conclusion is reliable.

This invention relates to the technical field of nut loosening resistance testing equipment, specifically a nut loosening resistance testing device, including a mounting platform. A support mechanism is provided at the upper middle part of the fixing device, a tightening device is provided at the upper end of the mounting platform, and a shaking device is provided at the lower part of the inner cavity of the mounting platform. The beneficial effect of this invention is that an intelligent preload sensor is embedded in the upper end of the annular plate of the support mechanism. Its detection end is in close contact with the lower end face of the nut to be tested, which can collect the preload value between the nut and the bolt in real time during the test, and simultaneously transmit the monitoring data to the electronic control system. It can capture the preload decay trend in real time. When the preload drops to a preset threshold, it can automatically trigger the electronic control system alarm and link the shaking device to stop. It can accurately record the critical shaking parameters when the nut loosens, realize the integration of real-time monitoring of preload, data traceability and abnormal early warning, and greatly improve the accuracy and reliability of test data.

The invention relates to the field of new energy automobile thermal management, and provides a new energy automobile condenser operation data processing method and system, and the method comprises the steps: obtaining the original data of an outlet pressure sensor of a condenser of a vehicle within a preset duration before the current moment; determining whether the outlet pressure sensor has a data drift trend according to the original data; under the condition that the outlet pressure sensor has the data drift trend, determining a target data drift mode in a plurality of data drift modes of the outlet pressure sensor according to the original data; determining a target data correction value of the outlet pressure sensor at a subsequent detection moment after the current moment according to the target data drift mode; and controlling the condenser based on the target data correction value at each subsequent detection moment and the data of the outlet pressure sensor at each subsequent detection moment. The accuracy of vehicle condenser operation data processing can be improved.

This invention discloses a 5G-based remote data monitoring and parameter control system and method for explosive loading equipment. The system includes: a field perception layer, a data transmission layer, a remote control layer, and an execution control layer. The field perception layer includes flow sensors, pressure sensors, temperature sensors, position sensors, speed sensors, a Beidou positioning module, and a camera installed on the explosive loading equipment. These sensors are used to collect data on latex matrix flow rate, sensitizer flow rate, delivery pressure, matrix temperature, hydraulic oil temperature, explosive loading height, delivery pump speed, equipment location, and on-site environmental imagery. This invention achieves remote real-time monitoring and parameter control through 5G communication technology, integrating high-precision data acquisition, rapid data transmission, intelligent data analysis, and precise execution control. It solves many shortcomings of traditional explosive loading equipment, improves explosive loading efficiency, blasting effect, and intrinsic safety level, and provides strong technical support for the construction of smart open-pit mines.

The application discloses a piezoelectric single crystal MEMS pressure sensor and a preparation method, and belongs to the technical field of MEMS and piezoelectric materials. The sensor comprises, from top to bottom, an electrode layer, a piezoelectric layer, a structure layer and a load action layer. The electrode layer comprises interdigital electrodes and reflective gratings, which are designed according to the acoustic wave wavelength λ / 4; the piezoelectric layer adopts a piezoelectric single crystal material as a sensitive film; the structure layer comprises a sealed cavity formed by etching; and the load action layer is a flexible silicon substrate. The application realizes a force transmission path of back force and front response through a 'air pressure coupling' mechanism. After external pressure acts on the load action layer, the air static pressure in the sealed cavity is changed and uniformly transmitted to the piezoelectric layer, so that the piezoelectric layer is driven to produce deformation and cause a frequency shift of the surface acoustic wave. The design discards the traditional top needle type force transmission structure, avoids the stress concentration problem, significantly improves the sensitivity, linearity and integration of the device, and expands the application in the field of air pressure detection.

This invention relates to the field of motor bearing testing technology, specifically to a testing device and method for testing the axial load of a motor positioning end bearing. It primarily addresses the technical problem that existing motor bearing axial load testing methods are unsuitable for motors operating in strong magnetic environments. The testing device includes a floating end bearing cover, a floating end sealing ring, a positioning end bearing, a positioning end detection mechanism, a floating end loading mechanism, and a data acquisition system. The positioning end detection mechanism includes a test bearing cover, a first piezoelectric force sensor, and an elastic support component. The floating end loading mechanism includes a support frame, a linear power element, and a second piezoelectric force sensor. The data acquisition system includes a data acquisition instrument. This solution is based on a contact-type piezoelectric force sensor for structural design to complete the test, offering advantages such as resistance to strong magnetic interference and suitability for motors operating in strong magnetic environments.

The application relates to the field of pipeline detection, and provides a multi-oil-gas conveying pipeline stress sensor data fusion method and system.The method comprises the following steps: acquiring first detection data collected by an alternating current stress measurement sensor and second detection data collected by a residual magnetism method stress sensor; based on a first feature extraction model, performing first feature vector extraction on the first detection data to obtain a first feature vector; based on a second feature extraction model, performing feature vector extraction on the second detection data to obtain a second feature vector; fusing the first feature vector and the second feature vector to obtain fusion features, and mapping the fusion features into a pipeline stress value through a stress mapping model.The method is based on the implicit function fitting capability of a deep learning model and feature vectors, establishes a mapping relationship between sensor signals and actual pipeline stresses, realizes data analysis and fusion of the sensor, and solves the problems of insufficient mapping relationship quantitative precision and poor reliability.

The present application belongs to the field of mine filling engineering and safety monitoring, and relates to an intelligent monitoring device and evaluation system for long-term performance of filling body in underground environment. The intelligent monitoring device comprises a packaging sheath, a sleeve, a sensor array, a signal conditioning circuit, a computing unit and a power supply module; the packaging sheath and the sleeve are made of titanium alloy material, the inner wall of the sleeve is coated with a silicon dioxide nano coating, which significantly improves the long-term service ability of the device; the sensor array comprises a solid-state ion selective electrode, an acoustic emission sensor array and an integrated wet temperature sensor; the device uses the signals obtained by the sensor array, and through a coupling algorithm of chemical corrosion rate and cumulative acoustic emission energy, the residual bearing capacity decay coefficient of the filling body is calculated in real time, and the result is transmitted to the monitoring server wirelessly for safety performance evaluation of the filling body; the evaluation result is more comprehensive, intuitive and timely, and provides a high-reliability and high-precision technical means for stability evaluation of filling body in green mining.

This invention discloses a PHC pipe pile hardness testing device and its testing method, belonging to the field of civil construction equipment technology. The testing device includes an impact mechanism, a data acquisition mechanism, and a testing mechanism. During testing, a clamping cylinder ensures that the acceleration sensor on the mounting block contacts the inner wall of the pipe pile with appropriate pressure. A pressure sensor is also installed on the mounting block, enabling real-time feedback and closed-loop control for accurate measurement of the pipe pile hardness. The testing method includes the following steps: 1. Driving the pipe pile to be tested; 2. Clamping the upper inner wall of the pipe pile with multiple positioning blocks, and recording the pressure sensor values ​​while hammering; 3. Suspending the data acquisition mechanism to the middle of the pipe pile, hammering, and recording the pressure sensor values; 4. Suspending the data acquisition mechanism to the lower part of the pipe pile, hammering, and recording the pressure sensor values; 5. Calculating the hardness of the pipe pile using the testing mechanism.

The utility model discloses a kind of auxiliary fittings for detecting foundation pile horizontal bearing capacity, it is related to the technical field of foundation pile static load test, including force transducer cross bar, the length of force transducer cross bar can be adjusted, the both ends of force transducer cross bar are connected with arc plate and plane plate respectively, arc plate is used to hold the side wall of foundation pile, plane plate is in abutment with jack;Force transducer cross bar is placed horizontally laterally. Arc plate holds the side wall of foundation pile, force transducer cross bar is placed horizontally laterally, the other end of force transducer cross bar is applied horizontal bearing capacity by jack, to apply horizontal load to test foundation pile, the loading device saves buttress, so that structure is simplified, transport difficulty is low, it is beneficial to reduce transportation cost, assembly and disassembly difficulty is low, so that test operation is more convenient, it is beneficial to reduce construction safety risk, test period is shorter, test cost is lower.

This invention discloses an intelligent foot pressure acquisition system and data processing method for ski instructors, belonging to the field of intelligent sports equipment and data processing technology. Its purpose is to solve the problems of large measurement errors, low processing efficiency, and insufficient posture recognition accuracy in existing technologies. The invention includes a flexible array pressure sensor module, a microcontroller information processing terminal, a Bluetooth communication module, and a host computer. The microcontroller information processing terminal, with a microcontroller as its core, integrates a voltage conversion module and a signal acquisition and amplification circuit. The pressure analog signal output from the flexible array pressure sensor module is input to the signal acquisition and amplification circuit, amplified, and then output to the microcontroller's ADC acquisition channel. The microcontroller performs analog-to-digital conversion and data preprocessing on the analog signal, and then outputs it to the Bluetooth communication module via a UART interface. The host computer communicates with the microcontroller information processing terminal via the Bluetooth communication module.

The application relates to a portable measuring mechanism and belongs to the technical field of measuring equipment, which comprises a casing and a measuring host fixedly connected in the casing, a first pressure sensor, a second pressure sensor and a temperature sensor interface are fixedly connected in the casing, a first air path interface is arranged on the first pressure sensor, a second air path interface is arranged on the second pressure sensor, a temperature sensor is connected to the temperature sensor interface, an antenna interface is arranged on the measuring host, and the measuring host is electrically connected with the first pressure sensor, the second pressure sensor and the temperature sensor. The application has the effect of improving the function types of a single measuring mechanism.

The utility model provides a kind of for instrument winch cable depth early warning device, include multisensor fusion module, calculation module, communication module, early warning module.The encoder of multisensor fusion module, tension sensor, inertial measurement unit cooperates and gathers cable data;Calculation module is handled in combination with environmental parameter to data, and cable depth is accurately calculated and compensates error;Communication module reliably transmits data;Early warning module realizes sound-light alarm, automatic shutdown, remote notification multistage early warning according to preset threshold value.In addition, special cable magnetic mark and wellhead magnetic mark identification device and single-chip microcomputer circuit auxiliary signal identification processing.This device improves the accuracy and reliability of cable depth monitoring, enhances safety performance, improves operation efficiency, reduces cost, applicable to complex environment, with good application prospect.