126 results about "Observations and Measurements" patented technology

The invention discloses a method for the in-situ dynamic observation and the measurement of the root system of a plant, which comprises the following steps: designing a transparent cultivation container and a growth medium; sterilizing seeds, accelerating germination, moving seedlings to the transparent cultivation container after budding, and keeping the natural growth of the root system of the plant in the transparent growth medium; scanning the root system by a three-dimensional laser scanning instrument, carrying out the in-situ observation and the image acquisition of the three-dimensional configuration of the root system and completing the steps of image collection, reconstruction, simulation and the like. By the three-dimensional visualization analysis of the in-situ growth condition of the root system of the plant, the invention directly reflects the three-dimensional growth condition of the root system, does not need destructive detection and realizes dynamic observation.

A composite material II type crack growth rate measuring method capable of acquiring a crack growth S-N curve comprises five steps: 1, a single end-notched flexure (ENF) composite material sample is selected and formed through molding fiber cloth and resin; 2, the sample is tested through a three-point bending manner; 3, a triaxial movable high power digital measurement system is adopted to observe and measure the crack growth length, and the test load, the cycle index and the corresponding crack growth length are recorded; 4, the constant interface shear stress of a neutral surface of the composite material is worked out according to the engineering beam theory, and a three-parameter power function is adopted to fit the crack growth interface shear stress and the corresponding cycle index so as to obtain the crack growth S-N curve; 5, a dual-growth exponent function is utilized to fit the test load cycle index and the a-N curve of a corresponding crack growth length, and the crack growth rate is obtained after derivation; a Paris model and an energy release rate formula are adopted, and a crack growth rate curve is obtained through least-squares approximation.

A system for collecting and analyzing agricultural data. A team of crop scouts performs a scouting operation in a farm, each crop scout interacting with a mobile device. The mobile device provides a navigation display guiding the scout along a route, from one data collection point to the next. At each data collection point, the crop scout makes observations and measurements and inputs the corresponding data into the mobile device. A control operator at a central location monitors the progress of the scouting operation and revises the routes or locations of data collection points when appropriate, based on data received during the scouting operation. A cloud service analyzes the data and provides recommendations to a farm operator.

The invention discloses a measuring device and a measuring method of an internal flow field and external characteristics of a water-jet propeller, and relates to the field of ship propulsion. A power unit of the measuring device of the internal flow field and the external characteristics of the water-jet propeller is suspended inside a ship model; two thrust acquisition modules of a data acquisition unit are arranged at the middle front part and the tail part of the ship model respectively; an axial force acquisition module is arranged on the power unit; a rotating speed and a torque acquisition module is arranged on the power unit. According to the invention, as a propeller shell made of a transparent organic glass material is adopted, observation and measurement for the internal flow field of the water-jet propeller are realized; as the data acquisition unit obtains the thrust, the axial force, the rotating speed and the torque of the propeller, and calculates the power of the propeller based on the rotating speed and the torque, the external characteristic of the propeller is accordingly obtained; the measuring device for the internal flow field and the external characteristic of the water-jet propeller is simple in structure, high in measurement precision and strong in operability.

The invention belongs to the field of geotechnical engineering and particularly relates to a test device for measuring the shearing creep characteristic of rock in a dry-wet cycling process. The test device comprises a loading device for pressing a rock sample, a measuring device for measuring deformation of the pressed rock sample and a dry-wet cycling device for dry-wet cycling treatment of the rock sample, and further comprises a box body communicated with the dry-wet cycling device and used for accommodating the rock sample, wherein the box body is divided along a shearing plane of the rock sample into a first shearing semi-box and a second shearing semi-box; the second shearing semi-box is fixed through a fixing device; the loading device presses the first shearing semi-box along the shearing plane and in the direction perpendicular to the shearing plane. The test device can realize real-time observation and measurement of the deformation, the shearing strength parameter, the failure mode and the like of the rock sample after different dry-wet cycling indexes under the cyclical variation condition of the water level of an emulation library.

The invention discloses a yawing moment control method of an individual driven electromobile based on a multi-agent. The yawing moment control method includes enabling a yawing moment electric control unit to ba a regulating controller of every motor of the individual driven electromobile to obtain a turning intention and a driving state of a driver in real time through a state observation and measurement module; obtaining torque adjusting motion sequence which is needed by four-wheel of the individual electromobile through a reinforced learning Q-algorithm which is based on a multi-agent; sending the motion sequence to every driven motor controller of the individual driven electromobile through the muli-agent, sending instructions to every driven motor to carry out received motion sequence, generating needed yawing moment and rectifying the posture of the electromobile. The yawing moment control method of the individual driven electromobile based on the multi-agent has the advantages of avoiding energy consumption during actuating process by utilizing driving force control, disposing non-linear elements existing in the system and guaranteeing the stability of turning.

The invention discloses a pollutant transport flux measurement and calculation method based on ground-based MAX-DOAS. The method comprises the steps: observing by using the ground-based MAX-DOAS to obtain the slant column density of polluted gas, and transforming into the vertical column density; obtaining a high-resolution two-dimensional distribution result of the polluted gas on an observation interface by using a satellite data result; using wind direction, wind speed information and an MAX-DOAS site location, determining a transport interface passing through an MAX-DOAS site, combining with a satellite data gridding result, and fitting to obtain a distribution curve of the polluted gas density along the interface; correcting satellite data by using the MAX-DOAS measurement result, to obtain a density distribution curve based on the ground-based MAX-DOAS vertical column density result; and finally, using a flux calculation formula, combining with relevant parameters, and calculating to obtain the transport flux of the polluted gas. The observation and measurement method is simple, apparatuses are easy to implement, the cost is low and the algorithm is mature.

The invention relates to an indoor positioning method for a smartphone user based on terrestrial magnetism-corrected inertial navigation. The method comprises the following steps: dividing a to-be-positioned area into small grids according to a plane map of a building; allowing the smartphone user to acquire the intensity data of terrestrial magnetism at the center of each grid for a period of time by using a smartphone with a built-in magnetometer; averaging the intensity data of terrestrial magnetism acquired in each grid and constructing and storing an off-line terrestrial magnetism fingerprint database; allowing the user to start to walk with the smartphone, detecting steps and estimating step length by processing the data of an accelerometer of the smartphone, and acquiring an included angle between a movement direction and a true north direction and current intensity of terrestrial magnetism by processing the data of a gyroscope; acquiring a predicted value of a current state; calculating a covariance matrix and Kalman gain in a prediction phase; calculating observation and measurement results; and updating a state. The method provided by the invention can realize high indoor positioning precision only by using the smartphone.

The invention relates to lateral compression performance measuring method and device of fibrous material, comprising the parts of fiber lateral cimpression element using pressure head on cantilever beam to lateral compress filament and overlapping fiber sample in multiangular tray, fiber deformation observing parts using two objectives with different direction finish stereo-observation and measurement to compressed fiber, compressive stress measuring elements with deflection correction to put in real time change of stress of pressure head in computer and the deflection correction is to correct vertical compressed displacement by small deflection deflection of cantilever beam when laser reflects measuring compression. By using multiple measurement of stress and conformational change and compact and novel design, lateral compression shape measurement is fast, accurate, overall, its measurement error has decreased greatly and the method is suitable for various kinds of fibrous material.

The invention relates to a method for obtaining a three-dimensional stress field of a rock mass model including a complex structural plane by using a rapid prototyping technology. The method comprises: (1), a stress frozen fringe value of a rapid prototyping material is measured and an optimal frozen temperature is determined; (2), a rock mass structural plane network system and a rock mass CAD model are generated; (3), rock model checking and printing are carried out; (4), stress freezing is carried out; (5), model slicing is carried out and a stress fringe value is measured; and (6), a rock mass model stress field is reconstructed. According to the invention, on the basis of the complicated building technology of the 3D printer and the photo-elastic measuring technology, two limiting factors that a rock mass model including a complex structural plane can not be manufactured easily and distribution of inner stresses of the rock mass belongs to the black box in the prior art can be eliminated and thus observation and measurement can be carried out by using the common testing means, so that development of the model testing can be promoted. Therefore, the method has the important application value in researches of the rock mass mechanical behavior.

The invention discloses a visual narrow rectangular channel aerosol motion deposition system which belongs to the technical field of multiphase flow. In the system, mainstream gas is supplied by a fan and is heated by a heater; an aerosol generator is added with small solid particles or liquid droplets by a branch circuit to form a disperse system; the disperse system is cooled when passing through a visual section and is finally discharged by a tail gas purifying device; and the observation and measurement on fine particles are implemented by utilizing aerosol observing equipment through the visual section. The system is mainly characterized in that the visual section is provided with a quartz glass window with the length of 1,000mm, so that the observation and the measurement on the integral section of continuous motion of the fine particles are implemented; and the system is safe and reliable and various parameters such as the temperature, the flow, the concentration and the like can be regulated. The system is beneficial to research on the aspects of subjects of a total mechanical equipment structure, the multiphase flow, the environment protection, the aerosol motion, the thermophoresis effect and the like.

The invention relates to a high-temperature micro-nano indentation testing device and method with an inert gas protection function, and belongs to the field of electromechanical integration precisioninstruments. The device consists of a thermal insulation unit, an inert atmosphere heating unit, a macro adjustment-precision loading unit, a microimaging unit, an XY precision displacement platform and a marble base. The XY precision displacement platform drives the thermal insulation unit, the inert atmosphere heating unit and a test sample to perform displacement on an XY direction so as to replace a press-in point and to adjust a microimaging position. The high-temperature micro-nano indentation testing device provided by the invention can test the micro-nano indentation response and mechanical properties of a material under the condition of inert gas protection at the environment of the room temperature to a high temperature environment of a 800 DEG C, and can perform in situ observation and measurement on the surface topography and deformation damage of an indentation area of the test sample of the material under the action of a high temperature in combination with a coaxial microscope with a filtering lens. The high-temperature micro-nano indentation testing device has the advantages of compact structure, high modularity, high test precision, controllable environment atmosphere and convenient operation and use, and so on.

The invention relates to a transparent parallel plate device for researching the viscous fingering of fractured acidification fluid, which is utilized for the test and research for the viscous fingering of fractured acidification construction in an oil field. The transparent parallel plate is characterized in that the transparent parallel plate is composed of two transparent plates which are bonded at the four edges, and a stimulant slit with the width between 5 mm and 20 mm is formed between the two parallel plates. A pressure sensor is fixed on one side of the parallel plates. A release valve and an exhaust valve are fixed on the parallel plates, and an inlet and an outlet for testing fluid are arranged on the left end face and the right end face. The outlet of a pumping system is connected with the inlet of two intermediate containers. A piston or a diaphragm is arranged inside an intermediate container. The outlet of the intermediate container is connected with the inlet of a shunt. The outlet part of the shunt is connected with the inlet of the transparent plates. The outlet of the transparent plates is connected with a confluence device, and the outlet of the confluence device is connected with a back pressure regulator. The transparent parallel plate device has the advantages that the occasion and the degree of the appearance of the viscous fingering of the fractured acidification under the conditions of different viscosity differences, density differences and different discharge capacity can be observed and measured, so as to conduct relevant scientific research.

The invention discloses a karst tunnel water inrush level evaluation method based on a trapezoidal cloud model under a one-dimensional X condition. The method comprises a step of constructing an evaluation indicator system for a karst tunnel water inrush risk level, classifying water inrush risk and determining a level division standard, and carrying out quantification processing on a non-quantitative indicator at the same time, a step of calculating the numerical characteristics of the trapezoidal cloud model under different risk indicators and thus completing the construction of the trapezoidal cloud model, a step of referring to and analyzing previous cases of karst tunnel construction and completing the establishment of a risk indicator system weight vector by using an analytic hierarchy process, a step of carrying out field survey and measurement to obtain risk indicator observation and measurement data and introducing the risk indicator data by using a cloud model algorithm underthe one-dimensional X condition to obtain different risk level membership degree values corresponding to indicators to complete the construction of a fuzzy comprehensive evaluation matrix, and a stepof selecting a suitable fuzzy synthetic operator and fusing the weight vector and the fuzzy comprehensive evaluation matrix to obtain a water inrush risk grade membership degree vector and determining the karst tunnel water inrush risk level.

The invention discloses an optical experiment instrument, in particular to a spectrometer based on CCD imaging and an adjusting method thereof. The spectrometer based on the CCD imaging includes a telescope, wherein an eyepiece of the telescope is connected with a CCD component. An adjusting method provided by the invention comprises the following steps: 1, roughly adjusting the level; 2, finely adjusting the level; 3, adjusting an objective table platform to be perpendicular to a spectrometer principal axis. The spectrometer based on the CCD imaging and the adjusting method thereof have the advantages that a CCD imaging principle is utilized to present images within the view of the telescope of the spectrometer on a display screen clearly, so that the observation vision field is enlarged greatly, the visual fatigue is reduced and the observation and measurement of experiment are facilitated; and besides, a leveling instrument is added on each of the objective table and a telescope lens cone, so that the precision of rough adjustment is improved greatly and the difficulty of adjustment is further lowered; in the adjusting method, three adjusting screws adopt the method of one fixing and two adjusting, so that the operating difficulty of the experiment is lowered greatly and the adjusting experiment is simpler and more convenient and easy to operate.

The invention discloses a simulation test method of residual coal oxidation temperature rising based on actual measurement of air parameters in a goaf area and belongs to the research field of coalmine goaf area residual coal spontaneous combustion prevention and control. The method includes the following steps: measuring and obtaining real air parameters in the goaf area by a beam tube monitoring method; drawing a curve of the air parameters in the goaf area, wherein the air parameters are varied with time; programming a servo control program by using a computer, and then conducting a residual coal oxidation temperature rising simulation test to obtain a temperature and indicator gas concentration changing curve of the residual coal of the goaf area in the working face advance process; analyzing the oxidation temperature rising characteristic and change rule of the residual coal of the goaf area. The method can be used for performing scientific observation and measurement and accurate analysis on the oxidation spontaneous combustion characteristic of the residual coal of the goaf area, and therefore a deep research on spontaneous combustion disaster prevention and control of the residual coal of the goaf area is convenient to perform.

The invention belongs to the technical field of multiphase flow measurement and particularly relates to an experiment system for measuring migration and sedimentation of granular corrosion products in a pipeline. The experiment system is characterized in that a blending device is arranged in a water tank, and the pipeline is arranged on the bottom of the water tank, is sequentially connected with a first valve, a transition section, a gate valve, a first experiment section, a turbine meter, a pressure gauge, a second experiment section, a third experiment section, a fourth experiment section and a second valve and is connected back to the water tank. The system has multiple controllable variables including the flow speed, the grain diameter, the grain concentration, the pH value and different channel structures and surface materials, can be used for researching the migration and the sedimentation of grains in a solid phase and a liquid phase and particularly researching the turbulent motion, the turbulent sedimentation and the like of specific grains on the surfaces of a specific flow field and a specific material and can realize relatively comprehensive and meticulous real-time dynamic observation and measurement to the movement of the grains through partially-visual experiment tube sections; meanwhile, the system is convenient to operate and has detachability.

An experimental method for studying material damage micromechanism based on in-situ analysis includes an experimental method of 2D in-situ analysis and an experimental method of 3D in-situ analysis and includes the specific steps as follows: the experimental method of 2D in-situ analysis includes: preparing a sample, a plane sample, determining an in-situ observation area, and predicting a surface cracking area or presetting an artificial gap; performing in-situ online testing; analyzing damage micromechanism; the experimental method of 3D in-situ analysis includes: preparing a sample and selecting a 3D sample identical to the 2D sample in material; determining an in-situ observation area, predicting a cracking part in connection with the distribution of microscopic composition of internal defects and the like, and using as a subsequent in-situ observation area; performing in-situ online testing; analyzing damage micromechanism. The 3D in-situ analyze enables observation and measurement for damage evolution in three-dimensional space, the 2D in-situ analysis has higher resolution and enables real-time imaging observation, and the two experimental means may be combined to complement each other's advantages.

The invention relates to and discloses convenient body temperature monitoring baby clothes, which comprise three parts: a coat, trousers and a body temperature monitor and are characterized in that the coat consists of a collar, a lower lappet, an upper lappet, sleeves, a connector and a body temperature monitor positioning hole, the trousers consist of a lower crotch piece, an upper crotch piece, legs and a connector, and both the coat and the trousers are in open structures and from disconnected/connected structures at the abdomen side/lateral side of a baby via buckle connection/belt connection/pasting connection through the connectors. The body temperature monitor consists of a temperature sensor, a transmission line and a monitor. The convenient baby clothes are connected with the body temperature monitor through the monitor positioning hole, and the complete convenient body temperature monitoring integral structure is formed. The convenient baby clothes and a body temperature monitoring and fever warning device are integrated, and the actual problems of wearing/taking-off complexity of the existing baby clothes and observation and measurement difficulty of the body temperature of the baby are perfectly solved, so more scientific and technological development and progress benefits can be realized through the upgrading of the baby clothes.

The invention discloses a test method of metallographic structure of austenitic stainless steel pipe for nuclear power. It is as follows: I. produce the metallographic observation plane by machining on the austenitic stainless steel pipe for nuclear power and grinding; II. conduct mechanical polishing on the plane by a polisher; III. Carry out electrolytic corrosion with the electrolyte the mixture of HNO3 and HCL and H2O [volume ratio, 10:1: (2 - 5)]; IV. Observe and measure the alpha phase of metallographic structure under the microscope; V. Maintain the electrolytic corrosion for another 5s-10s; VI. Observe the austenite grains under the microscope. The invention adopts the mixture of HNO3 and HCL and H2O as the electrolyte in the electrolytic corrosion. Together with the proper voltage, the phase of ferrite would not be affected by heavy corrosion while organization structures of ferrite and austenitic grains with clear levels can be obtained.

The invention provides a seaborne settlement observation and measurement method, which mainly comprises the following steps of: arranging settlement deformation measurement points, and establishing a settlement deformation observation reference network; observing a sea pier of the cross-sea bridge; carrying out elevation transmission; carrying out precise triangulation elevation observation; performing second-class level observation; after observation and information recording are carried out, carrying out data processing, carrying out adjustment calculation after closure error, median error and the like meet requirements, carrying out rigorous adjustment on a leveling line, and selecting software which is authenticated to be qualified; and inputting the result data into a database according to a unified format. The method is suitable for long-term observation of the abutment body in water and sea, the stability degree of the structure can be monitored synchronously in the construction process, reliable data basis is provided for the next construction procedure, and the efficiency of railway construction is improved.