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65results about How to "Easy to collect data" patented technology

Testing system for deep soil freezing/thawing process

The invention relates to a testing system for deep soil freezing / thawing process, which is structurally characterized in that a temperature-controlled box is connected with an external cold bath; a high pressure-resistant organic glass cylinder is arranged on a temperature-controllable steel base; two small holes are formed in the base, one is connected with a water guide pipe, and the other is connected with a pressure adjusting pipe; a permeable stone, a piece of filter paper and a sample are sequentially arranged at the upper part of the lower base, and a temperature sensor is mounted in the sample; a temperature-controllable upper press head is arranged at the upper part of the sample; a line leading-out hole is formed in the upper press head, and is sealed through sealant after the line is lead out; the upper press head is connected with the transmission rod of a testing machine; a measuring cylinder is connected with the sample through the water guide pipe; and the measuring cylinder is arranged on a weighing sensor and fixed through a bracket. By adopting the testing system, the freezing / thawing process of the deep soil can be rather systematically researched, so as to obtain the frost heaving rate and the water absorbing / draining rate of the deep soil which is in different depths frozen under the different temperature gradients. The testing system provides the technical guarantee for the research in clarifying the action of the external load on the forming processes of the freezing soil and the frozen soil cold-formed structures, and the mutual action of the temperature, the moisture content and the pressure of the soil body in the process of freezing under the high-pressure action.
Owner:NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS

Identity verification method based on mobile phone acceleration sensor

The invention discloses an identity verification method based on a mobile phone acceleration sensor. The method includes the following steps that firstly, a user writes a track with a mobile phone according to his habit, and a mobile phone acceleration sensor collects an acceleration value of the track; secondly, preprocessing is carried out on collected original acceleration data; thirdly feature extraction based on wavelet decomposition is carried out on the preprocessed data, and feature vectors are constructed; in the training stage, the data are collected, preprocessing and feature extraction are carried out, and the feature vectors are combined to form a set, an SVM is used for training a classifier model; in the identity verification stage, the user writes a gesture track to be verified, data are collected and are subjected to preprocessing and feature extraction, finally a track feature vector is added to an SVM model for verification, and whether the user is a legal user or not is judged. According to the method, identity verification of a mobile phone end does not need other external equipment, the mobile phone is effectively prevented from being stolen due to the fact that the gesture of each person is unique, and interaction is simple.
Owner:CENT SOUTH UNIV

Measuring system

The present invention provides a measuring system, which comprises a surveying device installed at a known point, at least one photodetection device to be installed at a measuring point, and a main arithmetic device; wherein the surveying device projects by rotary irradiation a reference plane forming laser beam including two or more fan-shaped laser beams with at least one of the fan-shaped laser beams tilted and a distance measuring light performs distance measurement by receiving a reflected distance measuring light, and performs communication of the distance measurement data between the photodetection device and the main arithmetic device; wherein the photodetection device calculates an elevation angle with respect to the surveying device based on a photodetection signal issued by receiving the reference plane forming laser beam, calculates an elevation position based on the elevation angle and the distance to the surveying device, and performs communication of distance measurement data and elevation position data at least with the main arithmetic device; and wherein the main arithmetic device communicates at least with the photodetection device among the surveying device and the photodetection device, and collects and records surveying data such as distance measurement data, elevation position data, etc. for each measuring point.
Owner:KK TOPCON

Computer dynamic simulation method of driver dynamic response behavior about graphic path information board

The invention relates to a computer dynamic simulation method of driver dynamic response behavior about graphic path information board. A simulation system provides more vivid fast road trip condition and a human-computer interaction interface which meets the human engineering principle for driver; the information of the trip condition comprises basic trip information, traffic flow operating state, GRIP information, vehicle azimuth information and other auxiliary information. The traffic condition and the GRIP information passed by the driver in the trip process are obtained by simulation of simulation mathematic model of macroscopic traffic flow of fast road network so as to lead the traffic condition passed by the driver in the trip process to be more real and increase the reliability of colllected response behavior data of the driver. The driver inputs the path selected by the mouse and the keyboard to the computer in the simulation trip process. The simulation method has the characteristics of low development cost, simple and convenient simulation test, easy operation, no limitation to test fields, fast test process and lower test cost and the like and can provide basic data for analysis and modeling of dynamic path selection behavior of the driver.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Environmental protection equipment remote monitoring system based on Internet of things

The invention discloses an environmental protection equipment remote monitoring system based on Internet of things. The system comprises a housing, the housing is of a hollow structure, the housing is internally provided with an air detector, the two sides of the air detector are symmetrically provided with air inlet grids, the air inlet grids are arranged on the housing, the inner wall of the housing is provided with a fixation frame, and the fixation frame is arranged above the air detector. According to the invention, through additional arrangement of a rotation motor, a rotation shaft, a fixation block and the fixation frame, the fixation block can be rotated through the rotation motor according to the demand of a user, the direction of a pick-up head is changed, data is conveniently acquired, multi-angle installation of the pick-up head is avoided, and the equipment cost is decreased. Through additional arrangement of a support, a hydraulic cylinder, the rotary shaft, a movable rod and a pillar, the position of the movable rod can be changed through cooperation between the hydraulic cylinder and a hydraulic rod according to the demand of the user, the angle of the pick-up head is changed, the data is conveniently acquired, and the demand of the user is satisfied.
Owner:武汉明道泰和信息技术有限公司

Soft rock strength test needle penetration instrument and use method thereof

The invention, which belongs to the technical field of geotechnical engineering detection, provides a soft rock strength test needle penetration instrument and a use method thereof. The soft rock strength test needle penetration instrument comprises a needle penetration instrument body, a connection buckle and a tripod that are connected. An electromagnetic coil is electrified; a center penetration hammer moves upward under the effect of the electromagnetic field to accumulate potential energy; after power interruption, the center penetration hammer makes free falling body movement and the potential energy is converted into kinetic energy, so that the penetration needle is hammered to apply pressures on the soft rock; and the falling distance of the center penetration hammer is controlledbased on the currents and thus the instrument can reach balancing every time in force applying. With a tripod leveling instrument, circular leveling bubble observation is carried out, so that the leveling performance of the instrument in operation is improved; the experimental success rate is further increased; a pressure sensor and a displacement sensor are used for replacing the manual countingmethod of the traditional penetration instrument, so that the result accuracy is improved; with an external device, the hammer number of times of the center penetration hammer is controlled and data are read; and the intelligent degree is increased and data are collected conveniently and precisely.
Owner:YANGZHOU UNIV

Scanner system applied to three-dimensional data collection of human body

The invention discloses a scanner system applied to three-dimensional data collection of a human body, which comprises a human body standing position cushion and a U-shaped lead rail; a slide base is arranged on the U-shaped lead rail, and the upper end of the slide base is fixed with a hydraulic cylinder; a lightweight frame body is supported on the hydraulic cylinder through a double-ejecting rod; the lightweight frame body is fixed with three optical three-dimensional scanners, and every optical three-dimensional scanner is composed of a rotating motor, a scanner shell body, a scanning head and a base; a long output shaft of the rotating motor is fixed with one side of a scanner shell body by crossing through the lightweight frame body, and the other side of the scanner shell body is fixed with the scanning head; the bottom end of the rotating motor is fixedly connected with the lightweight frame body through the base. The scanner system is simple in structure; three optical three-dimensional scanners are in reciprocating motion along the U-shaped lead rail; the three optical three-dimensional scanners can be linked and controlled to rapidly scan and collect through a computer, and then automatically assembled through the computer software; thus accurate and complete human body point cloud data is acquired; the scanner system provides basic information in need for realizing the intelligent medical treatment.
Owner:ANHUI ANTAI TECH

Method and special device for testing flowing performance of fabrics

The invention relates to a method and special device for testing the flowing performance of fabrics. According to the invention, a slide block is driven to reciprocate along a straight-line track by a power mechanism through a transmission mechanism, wherein the slide block carries a powerful magnet which moves synchronously with the slide block; a sample clamping head clamps the upper end of a fabric sample and drives the fabric sample to reciprocate so as to generate flowing forms; a Hall sensor is arranged in a fixed position; when the powerful magnet passes by the Hall sensor, the Hall sensor sends a digital voltage signal to a microprocessor, the microprocessor controls a flash lamp to flash through a relay, meanwhile, the microprocessor drives a shutter of a camera to start so as to photograph the fabric sample, and then, flowing form images of the fabric sample at the moment that the Hall sensor is magnetically induced by the powerful magnet are obtained; and the flowing form images serve as foundations for the comparison and evaluation of the flowing performance of the fabrics. According to the method and the special device, a variety of fabric flowing waves can be obtained and serve as objective data for the comparison and evaluation of the flowing performance of the fabrics.
Owner:SHANDONG SILK TEXTILE VOCATIONAL COLLEGE

Method for evaluating reliability state of lightning arrester under different air water contents

ActiveCN112684274AEffective simulation of water content environmental conditionsPracticalElectrical testingWater vaporTester device
A method for evaluating the reliability state of a lightning arrester under different air water contents is characterized by establishing a test platform, wherein the platform mainly comprises the lightning arrester, a working current intensity parameter tester, a test box, an air water content analysis control device, an air water content sensor and the like; carrying out lightning arrester reliability state test under different water vapor contents in the air, and controlling and measuring the water vapor content environment in the air where the lightning arrester is located by the air water content analysis control device in the test box through the upper computer; and then carrying out a lightning arrester working current intensity parameter measurement experiment to obtain a lightning arrester reliability coefficient expression under different water vapor contents in the air, establishing an evaluation model based on the theoretical error integral coefficient, and further evaluating the reliability state of the lightning arrester. According to the method, the reliability state of the lightning arrester can be effectively analyzed and evaluated under the condition that the moisture content of the lightning arrester in actual air is obtained, and safe and stable operation of the lightning arrester in an actual complex environment is facilitated.
Owner:SOUTHWEST JIAOTONG UNIV

Automatic monitoring method for layered settlement of vacuum preloading foundation

The invention discloses an automatic monitoring method for layered settlement of a vacuum preloading foundation. The automatic monitoring method comprises the following steps that (1) the length and the width of a mounting base plate are determined; (2) a plurality of monitoring point positions are determined; (3) the burying depth and interval of each sensing unit in the monitoring point position are determined, and the assembly of the sensing units is completed; (4) a wiring ring is placed in a sliding cylinder, and the length of a pull rope is adjusted to complete the assembly of measuring units; (5) a mounting substrate is driven to a designed depth in a mode of being vertical to the ground; (6) each measuring unit is electrically connected with a signal transmitting unit and is fixed to the mounting substrate; and (7) a signal sending device collects electric signals output by an encoder and sends the electric signals to a signal collection terminal for processing and generating the settlement volume of each soil layer. Settlement of the soil layer drives the wiring ring to move downwards in the sliding cylinder, the pull rope is driven to generate displacement, linear displacement is converted into the electric signal through the encoder, then the electric signal is processed to generate the soil layer settlement amount, real-time monitoring is achieved, and continuity and real-time performance of monitoring data are guaranteed.
Owner:TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +3

Deep soil freeze-thaw process test system

The invention relates to a testing system for deep soil freezing / thawing process, which is structurally characterized in that a temperature-controlled box is connected with an external cold bath; a high pressure-resistant organic glass cylinder is arranged on a temperature-controllable steel base; two small holes are formed in the base, one is connected with a water guide pipe, and the other is connected with a pressure adjusting pipe; a permeable stone, a piece of filter paper and a sample are sequentially arranged at the upper part of the lower base, and a temperature sensor is mounted in the sample; a temperature-controllable upper press head is arranged at the upper part of the sample; a line leading-out hole is formed in the upper press head, and is sealed through sealant after the line is lead out; the upper press head is connected with the transmission rod of a testing machine; a measuring cylinder is connected with the sample through the water guide pipe; and the measuring cylinder is arranged on a weighing sensor and fixed through a bracket. By adopting the testing system, the freezing / thawing process of the deep soil can be rather systematically researched, so as to obtain the frost heaving rate and the water absorbing / draining rate of the deep soil which is in different depths frozen under the different temperature gradients. The testing system provides the technical guarantee for the research in clarifying the action of the external load on the forming processes of the freezing soil and the frozen soil cold-formed structures, and the mutual action of the temperature, the moisture content and the pressure of the soil body in the process of freezing under the high-pressure action.
Owner:NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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