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155results about How to "Observation is intuitive" patented technology

Cyanobacteria biomass spatial-temporal change monitoring and visualization method based on remote sensing image

The invention relates to a cyanobacteria biomass spatial-temporal change monitoring and visualization method based on a remote sensing image. The method comprises the following steps: (1) pre-processing the remote sensing image of a research region, and constructing a normalized difference cyanobacteria bloom index (NDI-CB); (2) optimizing characteristics of the remote sensing image by using a characteristic optimization model based on VPRS (Variable Precision Rough Set)-GID (Grey Incidence Decision), and obtaining an optimized multi-characteristic space; (3) establishing a double-weighted SVM (Support Vector Machine) classification model based on a wavelet kernel according to the multi-characteristic space, performing extraction identification and change detection on the spatial distribution information of cyanobacterial bloom, and performing comprehensive verification and precision analysis by combining field observation data; and (4) performing overlapping display on the processed remote sensing image, GIS (Geographic Information System) vector data and the field observation data, thereby realizing the analog simulation of spatial-temporal change processes and rules of erupting the cyanobacterial bloom. Compared with the prior art, the cyanobacteria biomass spatial-temporal change monitoring and visualization method based on the remote sensing image has advantages of high cyanobacteria identifying precision and reliability, and the like, and is beneficial to analyzing and judging of causes and distribution changes of the cyanobacterial bloom.
Owner:TONGJI UNIV +1

Method for evaluating simulation of full-size well wall stability

ActiveCN103758513AHigh pressure temperature performance indexAchieve imagingBorehole/well accessoriesMeasuring instrumentHigh pressure
The invention discloses a method for evaluating simulation of full-size well wall stability. The method includes utilizing a full-size well wall stability simulator to apply confining pressure, pore pressure, horizontal pressure, overburden pressure, mud circulating pressure and drilling fluid circulating mediums required by an experiment on a rock core; measuring diameter expanding conditions of a rock core well in the process of the experiment through a well diameter measuring instrument (19); measuring acoustic wave feature changes of rock samples at a well wall after being soaked by drilling fluid under different circulating media in the process of the experiment through a stratum sliding wave sound speed testing system; directly observing actual changing conditions of the well after the well wall is soaked by the drilling fluid through a well wall visualizing and imaging system. The method has the advantages that downhole high-temperature high-pressure environment can be simulated more truly, stability conditions of the well wall can be evaluated dynamically, wellhole circulating media can be changed, the stability conditions of the well wall under different drilling modes can be evaluated, optimization of the drilling modes and drilling fluid systems is facilitated, and the method has high practicability and is convenient for popularization.
Owner:SOUTHWEST PETROLEUM UNIV +1

Device for measuring deflection/ displacement line shape by pressure difference and method thereof

The invention provides a device for measuring deflection / displacement line shape by pressure difference and a method thereof. The device comprises a trolley and an L-shaped pipeline filled with liquid, wherein the horizontal section of the L-shaped pipeline is arranged on the trolley along the length direction of the trolley; the two ends of the horizontal section of the L-shaped pipeline are respectively provided with pressure sensors A and B, and the bottom is provided with a temperature sensor; a wheel of the trolley is provided with a displacement transducer; the temperature sensor, the pressure sensors A and B and the displacement transducer are connected with a control system provided with an interface and a memorizer by a data bus; and the displacement transducer is used for controlling the measurement to start for once after the trolley rotates for N rounds. The two pressure sensors are used for measuring the pressure difference at the two ends of the pipeline, and calculating by the liquid density at the different temperatures, thus measuring the vertical altitude difference between two points. The invention has the advantages of wide measuring plane, high accuracy, no influence by light interference, high degree of automation, low measuring cost, etc.
Owner:CHONGQING JIAOTONG UNIVERSITY +1

Biological model of steroids hormone pollutant in foods and feeds established by utilizing Caenorhadits elegans and method thereof

The invention relates to a biological model of steroids hormone pollutant in foods and feeds established by utilizing Caenorhadits elegans and a method thereof, belonging to the field of a safety detection technique of foods and feeds. The biological model of the steroids hormone pollutant in the foods and the feeds is established by utilizing the Caenorhadits elegans. The method of the invention is characterized in that the Caenorhadits elegans is utilized to establish a biological model of steroids hormone pure products; the Caenorhadits elegans is utilized to establish the biological model of steroids hormone in the foods; and the Caenorhadits elegans is utilized to establish a biological model of steroids hormone in the feeds. The invention has the beneficial effects of important significance of the research of the steroids hormone to influence on human health, and short period, high efficiency, conciseness and convenience of the experiment course, less requirements on instruments, low cost and great application value. Moreover, the period of the Caenorhadits elegans from the first stage of larvae to the stage of oviposition and the generation time are detected to identify the precocity phenomenon of organisms under the influence of the steroids hormone by exposing the steroids hormone of the Caenorhadits elegans in the first stage of the larvae.
Owner:CHANGCHUN UNIV OF SCI & TECH

Low-cost rapid measurement method for ultrasonic transducer signal and circuit

The invention discloses a measurement method for ultrasonic transducer signal and a circuit, and is used for the conformance testing of ultrasonic transducer signals in ultrasonic flowmeter measurement. In the measurement method, the transducer is put into an airtight container, a baffle plate with adjustable acoustic wave path length is arranged in the container according to the design. The voltage, pulse count, frequency, and duty cycle of the excitation signals are adjusted, and then the reflected echo signals are processed. The processing circuit comprises a preamplifier circuit, a filter circuit, a gain control circuit and a peak-sampling circuit. The echo signals are stabilized in the same peak value by a digital AGC circuit formed by the gain control circuit and the peak value through the circuit, finally the parameters of the transducer are determined according to the magnification times of the echo signals, and a basis is provided for transducer pairing. Meanwhile, according to the changes of the sonic path distance under the same incentives condition, the measurement method can be used for the selection of different pipe diameter flowmeter transducers. The measurement method for the ultrasonic transducer signal and the circuit has the advantages of low cost, low power consumption, measuring stability and high resolution.
Owner:CHINA JILIANG UNIV

Surface settlement observation method based on tilt photography measurement of drone

The present invention discloses a surface settlement observation method based on tilt imaging measurement of a drone, to adapt to requirements of surface subsidence monitoring. The method includes thefollowing steps: route planning, layout and measurement of image control points, obtaining of oblique images, establishment of a three-dimensional model of a real view of a measurement area, data collection and making a data difference for subsidence monitoring. In the present invention, an oblique photogrammetry technology is used to obtain images of a collapsed surface in various angles, a real-view three-dimensional model and an orthophoto image of the subsidence zone with spatial information are established by using aerial triangulation measurement and measurement of the image control points, the real-view three-dimensional model is used to collect data of ground points, and a difference is made for the data of the ground points at a same position at different times to obtain a subsidence value for subsidence monitoring. The method is easy to operate, and compared with the traditional subsidence monitoring method, the method has a wide monitoring range and high operation efficiency, and can obtain a more comprehensive monitoring result.
Owner:XIAN UNIV OF SCI & TECH

Automatic test method and system of receiving sensitivity

InactiveCN106603170AGuaranteed accuracySolve the problem of heavy manual testing workloadReceivers monitoringSubstation equipmentAutomatic test equipmentNetwork packet
The invention discloses an automatic test method and system of receiving sensitivity. The method includes the following steps that: S100, under a current test scene, a control signal source sends test signals to a device to be tested according to preset initial maximum transmission power; S200, test data packets received by the device to be tested are put into statistics, so that receiving sensitivity can be obtained; and S300, all test scenes are traversed, so that each test scene is tested according to S100 and S200, so that receiving sensitivity under all the test scenes is obtained. According to the automatic test method and system of the receiving sensitivity of the invention, the test signals are sent according to the preset initial maximum transmission power, all the test scenes are traversed, so that receiving sensitivity testing can be performed on the all the test scenes, and the receiving sensitivity under all the test scenes can be obtained. With the automatic test method and system of the receiving sensitivity adopted, the problem of large workload of manual testing can be solved; problems caused by manual data extraction can be solved; the accuracy of test data can be ensured; and a lot of time and manpower can be saved.
Owner:PHICOMM (SHANGHAI) CO LTD

Experimental device and method for stability of tubular column in hydrate pilot production process

ActiveCN111305796AObservation is intuitiveReal-time monitoring of displacement characteristicsConstructionsFluid removalData acquisitionVertical load
The invention provides an experimental device and method for the stability of a tubular column in the hydrate pilot production process, and relates to the technical field of deep water hydrate exploitation. The experimental device comprises a hydrate preparation and exploitation simulation system, a hydrate exploitation well well mouth-multi-layer pipe system and a data acquisition and processingsystem. The hydrate preparation and exploitation simulation system is used for simulating collection of gas and / or liquid generated after decomposition in the depressurized decomposition process of hydrates. The hydrate exploitation well well mouth-multi-layer pipe system is used for simulating vertical loads and bending moment applied in the hydrate experimental process and simulating different working conditions. The data acquisition and processing system is used for monitoring and simulating data of the settling condition, and / or the inclination condition and / or the strain and stress changecondition in the decomposition process of the hydrates and carrying out analysis and processing. The scheme is used for evaluating the stability of the hydrate exploitation well well mouth-multi-layer pipe system under different exploitation working conditions, the relevant parameter change rule of the stability of a shaft in the hydrate exploitation process is disclosed with a method in which the simulation experimental device and a simulation experiment are combined, and great significance is achieved for next relevant value simulated analysis.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Cycloid demonstration teaching tool for advanced mathematics teaching

The invention discloses a cycloid demonstration teaching tool for advanced mathematics teaching. The cycloid demonstration teaching tool includes a blackboard. First and second gears on the front of the blackboard are sleeved with an endless chain. A drive motor is further disposed between the first gear and the second gear. An output shaft of the drive motor is equipped with a driving gear thereon. The driving gear and the second gear are engaged. A rack is disposed below the endless chain. Both ends of the rack are provided with limit blocks. A working gear is connected between and engaged separately with the ring chain and the rack. A support bar is disposed in the middle at the bottom of the blackboard. The lower end of the support bar is provided with a base plate seat. The bottom outer ring of the base plate seat is provided with a plurality of rollers. The support bar is also fitted with a sleeve thereon. The outer circumference of the sleeve is provided with a plurality of support legs. The cycloid demonstration teaching tool of the invention is simple to operate, time-saving and labor-saving, capable of allowing students to observe the cycloid intuitively, conducive to the students' understanding of the cycloid, easy in chalk replacement, high in stability and easy to move.
Owner:NANYANG INST OF TECH

Radioactive surface pollution measuring device and surface pollution measuring method

The invention relates to a method for measuring radioactive surface pollution. The method at least comprises the following steps: testing response characteristics of an alpha channel and a beta channel when alpha and beta particles simultaneously exist in a radiation detection device by using a plurality of first standard sources comprising typical nuclides; providing a second standard source of pure alpha particles to determine the response of the alpha particles in the beta channel of the radiation detection device, thereby pre-determining the response coefficient of the beta channel of theradiation detection device to the incident alpha particles; providing a second standard source of pure beta particles to determine the response of the beta particles in the beta channel of the radiation detection device, thereby pre-determining the response coefficient of the beta channel of the radiation detection device to the incident beta particles; dividing the alpha channel response coefficient by the alpha channel counting rate to obtain alpha surface pollution; deducting the alpha particle counting rate by the beta channel counting rate, multiplying the alpha particle counting rate bythe optimized response coefficient of the beta channel to the alpha particles, and dividing by the beta particle response to obtain the beta surface pollution.
Owner:NAT INST OF METROLOGY CHINA

Device for measuring class of discontinuous parameters of solid rocket engine

The invention provides a device for measuring a class of discontinuous parameters of a solid rocket engine. The device for measuring the class of discontinuous parameters of the solid rocket engine comprises a case, an input panel with an input interface socket, a power supply switch and state indication, an output panel with an output interface socket, a power supply socket and a power supply diverter switch, a power supply patch core and a circuit board. A current limitation circuit of the circuit board is formed by connecting n channel measuring circuits in parallel and then connecting the n channel measuring circuits with a total current limitation resistor R0 in series. A power supply indication circuit of the circuit board is formed by connecting an ordinary luminous diode L and a power supply indication circuit resistor R1 in series. A single channel measuring circuit is formed by connecting a highlight luminous diode Li, a single blade switch K and a one-way shunting resistor R in series. According to the device for measuring the class of discontinuous parameters of the solid rocket engine, the luminous diode is used for observing each line of signals, current limiting measures are adopted to ensure that the current of each line of the signals is in the milliampere level, a BNC contact is used for unitizing and simplifying the switch over links, two power supply modes which are a battery mode and a power supply mode are provided, and therefore measurement of the class of discontinuous parameters in a solid rocket engine test can be achieved.
Owner:中国航天科技集团公司第四研究院四0一所

Drilling and soil property detecting device and method for civil engineering

The invention discloses a drilling and soil property detecting device and method for civil engineering and relates to the technical field of civil engineering. The drilling and soil property detectingdevice comprises a base plate, wherein one side of the top of the base plate is fixedly connected with a working frame, the upper portion of the inner wall is fixedly connected with a supporting frame, a bidirectional motor is fixedly connected to the top of the supporting frame and is rotatably connected with a bevel gear I through an output shaft, the upper portion of the bevel gear I is in meshed connection with a bevel gear II, the bevel gear II is fixedly connected with a threaded column through a flat key, the outer wall of the threaded column is in sliding connection with a connectingsupport through a moving block, and two sides of the connecting support are in sliding connection with the inner wall of the working frame. By adopting the drilling and soil property detecting deviceand method for civil engineering, the purposes of quick drilling and real-time soil property detection are achieved, work is more quickly performed, the working efficiency is improved, unnecessary time waste is reduced, working of the working device at different positions is facilitated, rotation produced when a working cabinet needs to be fixed is prevented, and convenience is provided for a worker to use the working cabinet.
Owner:佛山拾念科技有限公司

Intelligent weather image acquisition and identification method and system

InactiveCN104978418AChanged the defect of not being able to collect weather imagesRecognition is intuitiveSpecial data processing applicationsComputer scienceImage identification
The invention realizes a weather image acquisition and identification method and constructs an intelligent weather image acquisition and identification system. An automatic weather image acquisition method is realized in a device of an automatic meteorological observing station, corresponding weather image sample data is automatically acquired according to various weather phenomena, and a weather phenomenon image sample library is automatically established; and an intelligent weather image identification method is realized, a weather image fuzzy identification method is realized based on the weather phenomenon image sample library, and the weather phenomena corresponding to weather images can be quickly identified. The defect of incapability of acquiring weather images in conventional meteorological observation is overcome, so that the visualized weather images can be automatically acquired according to the weather phenomena during weather observation, a visualized weather image sample library can be established, and the weather observation is more visual. Meanwhile, based on the intelligent weather image acquisition and identification system, the weather phenomena corresponding to the weather images can be quickly identified, more weather information can be obtained, and the intelligent method for identifying the weather by the images is innovatively realized.
Owner:杨昕吉

Electric head torque testing system

The invention discloses an electric head torque testing system. The electric head torque testing system comprises a loading assembly which is used for adding load for the electric head when tests the torque, a detection device comprises a torque sensor which is used for detecting the torque when the electric head works and an electric parameter transmitter which is used for detecting an electrical parameter when the electric head works, a data collecting card which is used for collecting data detected by the torque sensor and the electric parameter transmitter and a display set device which is used for setting the type of a to-be-detected electric head, the torque testing types and testing parameters which are corresponding to the type and outputting the testing parameter to the loading assembly, wherein the data collecting card is also used for displaying data collected by the data collection card. According to the electric head torque testing system, the display setting device and various testing types are set, actual work conditions can be simulated during the electric head testing process, utilization states of the electric head can be comprehensively simulated, and comprehensive data and initiative data observation during the electric head testing process are guaranteed.
Owner:深圳市一诺仪表设备有限公司

Breathing warm-body dummy for detecting inhalation exposure of particulate pollutants and operation method thereof

The invention discloses a breathing warm-body dummy for detecting inhalation exposure of particulate pollutants and an operation method thereof. The breathing warm-body dummy comprises a dummy body, atemperature control device, a breathing simulation device and a plurality of particulate matter detection devices. A temperature control device is arrange on that dummy body; The respiratory simulation device comprises a 3D printing respiratory tract and an artificial lung; 3D prin respiratory tract is arranged inside that dummy body, the simulate lung is arranged outside the dummy body, and is connected with the respiratory tract through a gas delivery skin pipe; Several particulate matter detection devices are mounted in the bottom volume of the 3D printing respiratory tract of the respiratory simulation device and in the environment at the mouth and nose of the dummy body and 1 meter away from the dummy body, respectively. The invention can simulate the heating temperature of the surface and the interior of the human body, and can largely restore the micro environment of the human body under the real situation. It can also simulate the respiratory characteristics of human body. Itcan be used to simulate the concentration of particulate pollutants in respiratory tract and respiratory microenvironment.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Simulation test system for underground construction in city

An urban underground engineering simulation test system includes a simulation box, a loading device, a loading oil circuit system, a groundwater simulation system and a data acquisition system. There is a horizontal loading plate in the simulation box, which can move horizontally to load the simulation material horizontally under the drive of the horizontal loading device, and the vertical loading device can load the simulation material vertically. There are several layers of horizontal water inlet pipes in the simulation box. According to the actual situation of groundwater in the underground project, the groundwater level and water pressure of different aquifers are simulated respectively, and the groundwater impact test is carried out. The empty size of the simulation box is 8 cubic meters, and a large-scale simulation test can be carried out. Therefore, this system has the remarkable advantages of realizing complete true three-dimensional hydraulic loading, large-scale simulation, water-soil coupling simulation, automatic loading and data acquisition, strong versatility, and multiple functions. It can realize various urban subway projects, tunnels and underground tunnels. Three-dimensional simulation test of chamber engineering, foundation and foundation engineering, special underground construction method, slope engineering, earth retaining structure, etc.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Experimental animal hollow organ and vessel pressure-tolerant mechanics test device

The invention relates to an experimental animal hollow organ and vessel pressure-tolerant mechanics test device, belonging to the technical field of devices for animal experiment. The test device comprises a double-way pipe, a three-way pipe, a pressurization module and a pressure detection recording module, wherein the double-way pipe, the pressurization module and the pressure detection recording module are communicated with the three-way pipe, and the other end of the double-way pipe is communicated with a closed hollow organ or a vessel to be tested. During an experiment by using the test device provided by the invention, the pressurization module is used for pressurizing the inside of the hollow organ or the vessel to be tested, and the pressure detection recording module is used for detecting and recording the pressure data in real time; once the hollow organ or the vessel is broken, the highest pressure data recorded by the pressure detection recording module is the bursting pressure so that the experimental process is simple, the observation is visual, and the experimental data is accurate and scientific. The experimental animal hollow organ and the pressure-tolerant voltage mechanics test device has the advantages of simple structure, low cost and wide application range.
Owner:SHANGHAI YANGPU CENT HOSPITAL
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