638results about How to "Accurate observation" patented technology

An objective optical system includes a first group having positive refractive power and a piano-convex lens with the convex surface facing the image side; a second group having positive refractive power and a lens whose extreme-object-side lens surface is a convex surface facing the object side; a third group having negative refractive power and a lens whose extreme-image-side lens surface is a concave surface facing the image side; a fourth group having positive refractive power and a lens disposed on the extreme object side, whose image-side lens surface is a convex surface facing the image side and a lens disposed on the extreme image side, whose object-side lens surface is a convex surface facing the object side; and a fifth group having positive refractive power and a combined lens formed by joining a convex lens and a concave lens, the joined surface having negative refractive power.

Arrangement for executing and monitoring rotablation, in which a rotating drill head arranged at the tip of a catheter removes plaque adhering to a vessel wall while pushing aside normal vessel tissue, with a rotablation catheter and an IVUS catheter being integrated into one constructional unit.

The invention relates to a longitudinal speed evaluation method of a full-wheel electrically-driven vehicle. The method comprises the following steps: 1) configuring a speed measuring system; 2) collecting signals shown in the specification in real time; 3) carrying out filtering treatment on the collected signals in a Kalman filtering mode; 4) establishing a speed evaluation formula based on a Kalman filter space equation structure and a speed evaluation formula based on integrated acceleration; and 5) switching discretion by using a speed evaluation algorithm: setting a threshold value for the absolute value of the trackslip / slip rate lambda as epsilon, when the absolute value of lambda is less than the epsilon, adopting the speed evaluation formula based on the Kalman filtering, and when the absolute value of lambda is more than or equal to the epsilon, adopting the speed evaluation formula based on the integrated acceleration. The method provided by the invention is suitable for online speed evaluation of the full-wheel electrically-driven vehicle, comprising exact observation for the longitudinal speed when the wheel is subject to excessive trackslip / slippage and even locking.

The invention provides a physical simulation experimental device for oil and gas charging of a fracture-cave carbonate reservoir. The physical simulation experiment device comprises a fracture-cave model, an experiment table with a window, surrounding rock and a camera shooting and monitoring system, wherein the fracture-cave model comprises simulation caves in different sizes and simulation fractures in different sizes, and the simulation caves are communicated through the simulation fractures; the fracture-cave model is arranged in the experiment table with the window, and the simulation caves in at least one side of the fracture-cave model are visible through the window of the experiment table; the surrounding rock surrounds the fracture-cave model to form the fracture-cave carbonate reservoir in a simulating manner; and the camera shooting and monitoring system is used for detecting and adjusting changes of both the flow rate and pressure in the charging process and recording images, displayed in the window, of the fractures and the caves in the charging process. The invention further provides a physical simulation method for oil and gas charging of the fracture-cave carbonate reservoir, and the physical simulation method employs the experimental device. According to the physical simulation method and the physical simulation experimental device for oil and gas charging of the fracture-cave carbonate reservoir, an oil-gas-water distribution rule can be obtained according to such parameters as karst, fractures, crude oil density and oil-gas-water distribution.

The endoscope apparatus includes a wavelength switching unit for switching emission wavelengths of a first illumination light including at least broadband light and a second illumination light including only plural kinds of narrowband light, an imaging unit for capturing an image of a subject by the first illumination light or the second illumination light having the switched emission wavelength in each imaging frame, an acquisition unit for acquiring biological information relating to form and / or function of a biological object serving as the subject and a mode switching unit for switching at least two diagnosis modes based on the biological information. The number of imaging frames by the imaging unit in which the emission wavelengths of the first and second illumination light are switched varies depending on the diagnosis mode.

An apparatus and method for stacking multi-temporal MAI interferograms Disclosed are disclosed herein. The apparatus includes a processor configured to: generate a forward-looking InSAR (Interferometric Synthetic Aperture Radar) interferogram and a backward-looking InSAR interferogram of multi-temporal interferometric pairs; generate a residual forward-looking interferogram and a residual backward-looking interferogram by removing low-frequency phase components from the forward-looking InSAR interferogram and the backward-looking InSAR interferogram; generate a stacked forward-looking interferogram and a stacked backward-looking interferogram by separately stacking the residual forward-looking interferogram and the residual backward-looking interferogram; and generate a stacked MAI interferogram based on a phase difference between the stacked forward-looking interferogram and the stacked backward-looking interferogram.

Provided is a laser scanning observation device including: a window unit provided in a partial area of a casing and configured to be in contact with or close to an observation target; an objective lens configured to collect laser light on the observation target through the window unit; an optical path changing element configured to change a direction of travel of the laser light guided within the casing toward the window unit; an astigmatism correction element provided in a front stage of the window unit and configured to correct astigmatism occurring upon the collection of the laser light on the observation target; and a rotation mechanism configured to allow at least the optical path changing element to rotate about a rotation axis perpendicular to a direction of incidence of the laser light on the window unit to scan the observation target with the laser light.

An endoscope system is provided in which blood vessels (pits) are extracted from an image captured by an endoscope to perform pattern matching with vascular patterns (pit patterns) associated with the cancer invasion depth and operations such as enhanced display of blood vessels, suggestion of preferred imaging conditions and display for diagnosis support are performed based on the matching result. The endoscope system enables even a less-experienced doctor to correctly diagnose the cancer invasion depth.

The invention discloses an ink cartridge for an ink-jet printer, which comprises a cartridge body, a protective cover capable of moving relative to the cartridge box under the action of pressure, an ink cartridge detection mechanism for detecting the ink cartridge and an ink surplus detection mechanism for detecting the surplus of ink, wherein the ink cartridge detection mechanism comprises a first detection component matched with a first sensor on the printer and a second detection component matched with a second sensor on the printer, the second detection component comprises a shielding part, a stationary shaft arranged on the cartridge body, a movable shaft arranged on the protective cover, and a shielding part position recovery part, and the shielding part is connected with a rotating shaft of the stationary shaft, rotates around the stationary shaft under the pressure of the movable shaft, and can recover the position along with the protective cover under the action of the shielding part position recovery part. Finally, the light emitted by a transmitting part of the second sensor is still shielded by the shielding part, but not a movable lever with light-transmitting middle part of the ink surplus detection mechanism, thereby being not affected by the surplus of the ink.

The invention provides a staged fracturing or synchronous fracturing simulation experiment method for a shale horizontal well. The method comprises the following steps: (a) the natural fracture morphological characteristics of shale in a stratum to be simulated are analyzed; a shale outcrop material for producing a simulation test piece is selected, and the shale material is machined to a cube rock mass according to the shale settled layer characteristics; and the surface of the mass is brushed with resin adhesive for sealing; (b) a through hole is drilled in the middle of the test piece; and when the synchronous fracturing of the horizontal well is simulated, two equal holes are drilled; (c) silent crushing agent slurry filling sections are added in the drill holes; and the needed number of fracturing sections is produced by partition pieces; and (d) the simulation fracturing experiment is performed by using the simulation test piece; and fracture morphology image information in a rock core is obtained after the experiment. For brittle shale with natural fracture development, the method is easy to realize the experimental simulation of staged fracturing or synchronous fracturing of the horizontal well. Meanwhile, the high-energy CT scanning is performed for the test piece through a linear accelerator nondestructive testing system to realize precise observation of a shale fracturing net. The experiment method can be applied to the research on propagation rules of the shale fracturing net under the effect of matrix pressure transfer.

It is predicted that an observational direction (or an incident direction of an electron beam) in an observed image actually obtained has some errors compared to a set value. The error portion affects the analysis of the observed image later. Therefore, a convergent electron beam is irradiated on a specimen with a known shape, electrons discharged from the specimen surface are detected, an image of the electron is obtained, an incident direction of the convergent electron beam is estimated based on a geometric deformation on an image of the specimen with a known shape, and a 3D shape or a shape of a cross section of a specimen to be observed from a SEM image of the specimen to be observed is obtained by use of the information of the incident direction of the estimated convergent electron beam.

The invention relates to a food safety risk traceability analysis method and a system based on a block chain. The block chain technology is applied to a database layer and a communication layer of thesystem, and the visualization technology is applied to a service layer of the system. Data upload requires the initiator's digital signature to ensure that the data is not tampered with and that thedata is stored in the block chain. Data access is controlled by permissions to access data in the chunk chain by executing smart contracts. Use Force-Directed Graph and flow maps show the food risk traceability process. When tracing the source of food safety risk, the user can trace the source of food safety risk through Force-Directed Graph Drills up to trace the source, then down to track the flow of food, Force-Directed Graph drill-through operations are shown in conjunction with a flow map in which arrows indicate the flow direction of risky foods, where different shades of color representdifferent degrees of risk flow. The invention not only solves the problems of unsafe storage of the traditional food traceability data and the vulnerability of the central database, but also providesa friendly visual interaction interface for users.

The invention provides a method for observing a rotary speed of am induction motor of a Kalman filter with index fading factor, belonging to the field of drive control of motors. The method solves the problem that the observing result of state variable is influenced because the matrix error of the noise covariance is great in the standard Kalman filter EKF (Extended Kalman Filter) algorithm which is used for observing the rotary speed of the induction motor in the prior art. In the invention, the method realizes the rotary speed observation on the basis of a rotary speed observer and the Kalman filter is utilized in the rotary speed observer to carrying out error predication; the index fading factor lambda (K+1) is introduced into an error covariance matrix predictive equation of the Kalman filter in the process of realizing the rotary speed observation by operating the rotary speed observer; and the error covariance matrix predictive equation is shown in the specification. The method provided by the invention is suitable for observing the rotary speed of the induction motor.

The invention provides a treatment method for large-thickness collapsible loess. The treatment method comprises the following steps: 1) sinking small-diameter steel casing into soil to form pile holes each having a depth equal to or smaller than the thickness of the collapsible loess stratum; 2) inserting (1) 1-6 drain boards or (2) hollow water pipes with a plurality of drain holes or (3) hollow steel pipes with a plurality of nozzles into the pile holes to bottom ends thereof; 3) repeating the steps 1) and 2) until the pile holes with the water injection fittings are formed everywhere in the field; 4) injecting water or injecting water under pressure into the water injection fittings in the pile holes to cause self-weight collapsible settlement of the collapsible loess after immersion; 5) observing and recoding the collapsible settlement amount of the soil mass in a foundation until the collapsible deformation of the soil mass in the foundation is stable; and 6) reinforcing the top-layer soil mass of the foundation by use of a filling compaction method or a dynamic compaction method. The treatment method has the characteristics and advantages of high construction speed, remarkable effect of eliminating loess collapse, dry operation, high bearing capacity, and the like.

An ultrasonic diagnostic apparatus includes an ultrasonic observation unit that forms an ultrasonic tomographic image based on an ultrasonic signal obtained by transmission / reception of the ultrasonic wave to / from inside of the living body, a position orientation calculation unit that detects the position and / or the orientation of the ultrasonic tomographic image, a reference image memory that stores the reference image data, a 3D guide image forming circuit that forms a stereoscopic 3D guide image for guiding an anatomical position and / or orientation of the ultrasonic tomographic image based on the reference image data stored in the reference image memory using the position and / or the orientation detected by the position orientation calculation unit, and a display unit that displays the 3D guide image formed by the 3D guide image forming circuit.

A microdosimeter, comprising an array of three-dimensional p-n junction semiconductor detectors, each providing a sensitive volume-target and a tissue equivalent medium for generating secondary charged particles. The array is manufactured from a semiconductor on insulator wafer and the detectors are located to detect secondary charged particles generated in the tissue equivalent medium.

A solid sample fabricating method includes preparing a specimen containing a first substance, which is in a liquid phase at normal temperature and normal pressure, and a second substance different from the first substance, which is in a solid or a liquid phase at the normal temperature and the normal pressure, the second substance being dispersed in the first substance, and attaching the specimen as a droplet to a surface of a cooled stage, whereby an entire region to be observed is converted into an amorphous state.

The invention relates to a vacuum low temperature micro visualize, which comprises a sight chamber, a cold trap, a refrigeration system, a vacuum system, and a control and teat recording system. A microscope, an electronic scale, a cooling and heating element, a winding lens shielding mechanism, a temperature sensing element, and a pressure sensing element are arranged in the sight chamber. A low temperature condensing coil is arranged in a cold trap chamber, the refrigeration system is connected with a heating refrigeration board and a nozzle of the sight chamber as well as the condensing coil of the cold tap chamber. A vacuum pump is connected with a pumping hole of the cold trap chamber, the computer control and teat recording system is connected with a thermocouple, the electronic scale, and the sight chamber, and is connected with an image collector above the microscope through an image data processor. The invention can be used for studying the heat-transfer and mass-transport process of various solids and liquid materials under the condition of low temperature and vacuum, and for timely and continuously observing the mass, the temperature, the pressure, and the micro image of the observed materials, which are recorded and stored by a computer, thereby realizing the numeralization operation.

An arrangement, equipped with a holder 9, which supports a solid immersion lens 3 in the gravity direction with the bottom surface of solid immersion lens 3 being protruded downward through an opening 9b, is provided. With this arrangement, when solid immersion lens 3 is set on an observed object, solid immersion lens 3 is put in a state in which it is raised by the observed object and is made free with respect to holder 9. Also in this state, an excessive pressure will not be applied to the observed object and yet solid immersion lens 3 is put in close contact in conformance with the observed object and temperature drifts at the holder 9 side or the observed object side are cut off from the counterpart side and thus the influences of such temperature drifts are eliminated. A solid immersion lens holder, with which the damaging of the observed object can be eliminated and which enables high-precision observation, is thus provided.

The invention discloses a reactor core fluid-solid coupling calculation method of a nuclear reactor diffusion type plate fuel element. The method comprises the following steps: 1, establishing a nuclear reactor diffusion type plate fuel assembly fluid domain calculation model; 2, establishing a nuclear reactor dispersion type plate fuel assembly solid domain calculation model; 3, writing the irradiation effect in the burnup process of the reactor core into a solid finite element analysis program in a subprogram form; 4, carrying out steady-state calculation on the model in the step 1; 5, calling a result in the step 4 by utilizing an intermediate data exchange interface program, calling the calculation models in the step 1 and the step 2, continuously exchanging data between the fluid dynamics calculation program and the solid finite element analysis program subjected to secondary development in the step 3, and performing iterative calculation; and 6, performing iterative computation until the set computation termination time is reached, and stopping the computation. The detailed instantaneous thermal-hydraulic phenomena on the two sides of fluid and solid under the irradiation condition of the nuclear reactor plate-type fuel element core are obtained through calculation, and the method has important significance in design and safety analysis of a nuclear reactor.

The present invention achieves a heating stage for a micro-sample, capable of efficient heating and accurate observation of the micro-sample. A micro-sample mount is a heating portion in coil form and is fixed at both ends to a base for the heating stage for the micro-sample. The base can be divided into two members at a base cut line, and the mount is fixed at one end to the first member and is fixed at the other end to the second member. A sample subjected to micro-sampling is mounted on the mount. The base is removed from the tip of a holder, and is mounted on a stage for the sample stage. A current is fed to the micro-sample mount through the members to thereby apply heat to a micro-sample for observation.

A microchip which comprises therein a first channel for the inflow of a first liquid selected from among whole blood, platelet-rich plasma or a liquid prepared by treating the same with a chemical, a second channel connected to the first channel for the inflow of a second liquid containing a chemical capable of reacting with the first liquid as described above, and a confluence channel extended from the connection section of the first channel with the second channel, characterized in that a stirring section provided with a stirrer for mixing the above-described first liquid with the above-described second liquid is provided in the confluence channel as described above, and a blood monitoring device using the microchip.

The invention especially relates to a hybrid crawling and swimming unmanned submersible and an application method thereof, belonging to the technical field of underwater equipment and system for oceaneering. According to a technical scheme in the invention, the hybrid crawling and swimming unmanned submersible is characterized by comprising an unmanned cruising device (1) and at least multi-joint mechanical legs (2). The hybrid crawling and swimming unmanned submersible can carry out both rapid cruising in an ocean via the unmanned cruising device (1) and stable crawling at a seabed via the multi-joint mechanical legs (2); the unmanned submersible has high-efficiency large-scale maneuvering capability as an autonomous underwater vehicle (AUV), precise moving and positioning capabilities as a remote operated vehicle (ROV) and anti-ocean current stabilizing power as a crawling robot; and the unmanned submersible has the characteristics of high stability, low energy consumption and good environment adaptability and meets application demands for close-distance accurate stable observation and sampling, salvaging, searching and rescuing and the like in a complex seabed environment.

The invention belongs to the field of 3D display and discloses a field holographic display system. The system comprises a holographic projector, a projection screen, an interaction response unit and aprocessor; the holographic projector is corresponding to the projection screen in position; the holographic projector and / or the projection screen is provided with a movement executing mechanism connected with the processor; the processor is electrically connected with the holographic projector, the interaction response unit and the movement execution mechanism; the holographic projector projectsa divergent 3D image in the air; additional reference light sources are not needed; after the 3D image is converted through the projection screen of an equivalent negative-refractive index plane lens, a 3D image which can be observed and floats in the air can be obtained, and therefore, cost is reduced; the 3D image can be also displayed in front of or behind the projection screen, and display space is infinite; and an ultra-large picture and an ultra-deep field depth can be displayed in extremely small equipment space.

The invention discloses a plant rhizosphere box and the application thereof in the micro-domain research of wet land plant rhizosphere. The plant rhizosphere box comprises a box body, the inside space of the box body is partitioned into a root zone, a near root zone, a far root zone and a non-root zone and other different rhizosphere micro-domain partition zones by a number of rhizosphere partition plugging plates, water distribution units are arranged on the upper part of the box body, and water level regulating units are also arranged on the box body; and a water discharging device is arranged on the bottom of the box body. Through the adjustment of the intervals between the different rhizosphere micro-domain partition zones, the accurate observation and the research of the differentiation changes of different distances from the root system, and / or root zone soil, and / or interval water nutrients, pollutant, and / or microorganism are achieved. Based on the plant rhizosphere box, water flooded habitat of plants grown in wet land can truly be simulated, so that water flow conditions in the substrate can be maintained, and different water pressure retention time and water levels are arranged according to the needs, and the plant rhizosphere box has wide application prospect in plants, especially in the micro-domain research of wet land plant rhizosphere.

The invention discloses an eye fundus image structure segmentation method based on full convolution neural network. The method comprises the steps of firstly marking the macula, optic disc and optic cup of each fundus image sample, and generating the corresponding target result map of each fundus image sample; then using each fundus image sample and corresponding target result map as a pair of training image samples to obtain the training image sample set; using the training image sample set to train the full convolution neural network, and inputting the fundus image to be segmented to the full convolution neural network to get the corresponding target result map; then using the K-means clustering and ellipse fitting to get the segmentation result. The method of the invention can improve the precision of the fundus image segmentation and better distinguish the normal physiological structure of the fundus.

A tilted illumination observation method and observation device with easy adjustment, high speed, good reproducibility and low cost is provided. A high resolution tilt image of a specimen is obtained by extracting the blurring on the scanning spot occurring during beam tilt from the image (step 6) captured by the tilted beam, and the image (step 4) captured from directly above the standard specimen; and then deconvoluting (step 11, 12) the tilted image of the target specimen (step 10) using the extracted scanning spot from the oblique beam.

The invention discloses a transformer substation patrol robot position detecting method based on a high frequency injection method. According to the method, an initial position tracking closed-loop control system, a rotating high frequency voltage injection method, a PMSM inductance identification model, a multiple-salient-pole decoupling observer and a rotor position anti-interference observer are combined together to conduct rotor position angle detection. By means of the transformer substation patrol robot position detecting method based on the high frequency injection method, the smooth starting of the transformer substation patrol robot PMSM is achieved, and precise, effective and real-time detection of the rotor position information of the transformer substation patrol robot PMSM can be achieved.