212results about How to "Accurate observation" patented technology

The invention discloses a seabed sediment classification method and product based on seabed surface sediment acoustic characteristics, and relates to the field of seabed acoustic detection. The method comprises the following steps: firstly, acquiring actual measurement data of seabed sound reflection of a measurement area in a marine environment, and performing inversion to obtain seabed surface sediment characteristic parameters; by analyzing the uncertainty and correlation of the characteristic parameters of the seabed surface sediments, acoustic characteristic parameters of the seabed surface sediments are screened out; constructing a deep neural network model based on the acoustic characteristic parameters of the seabed surface sediments, wherein the deep neural network model comprises a seabed acoustic-physical information neural network model and a sediment attribute prediction neural network model; expanding the training sample set according to the actual measurement data of seabed sound reflection and the acoustic characteristic parameters of the seabed surface sediments, and training and testing the deep neural network model; the trained seabed sediment classification model is adopted to perform seabed sediment classification of the measurement area, fine classification of the seabed sediment can be realized, and classification continuity and classification precision are improved.

The invention discloses a visual tracking and real-time guiding robot and conveying belt following method, and belongs to the technical field of book packaging, the visual tracking and real-time guiding robot and conveying belt following method comprises a conveying belt device used for conveying articles and having adjustable running speed and direction control functions; the robot main body is arranged on one side of the conveying belt device; the fixed vision device is connected with the robot main body; through cooperative work of the robot vision module and the independent fixed vision device on the robot body, all-directional vision coverage of the conveying belt and the surrounding environment is achieved, and the robot vision module focuses on local detail information of the robot and objects on the conveying belt; the relative position and posture change of the robot and an object can be captured in a close-range and high-precision mode in the operation process of the robot, and the fixed vision device continuously monitors the overall condition of the conveying belt from the overall perspective.

The invention discloses an underwater vehicle tracking control method with state constraint under input saturation. The method comprises the following steps: firstly, constructing an AUV control system containing model uncertainty and unknown interference based on a kinematics model and a dynamics model of the AUV, and obtaining a reference trajectory of a tracking target; establishing an error model of the AUV control system in combination with the error conversion function, and obtaining a design variable related to the position tracking error; meanwhile, deducing a design variable related to a speed tracking error; constructing a fixed time integral sliding mode lumped disturbance observer based on a design variable related to a position tracking error; and finally, combining a fixed time integral sliding mode lumped disturbance observer and design variables related to a speed tracking error to construct a trajectory tracking control system, and designing a fixed time convergence sliding mode controller by using a continuous input signal and a position and speed adaptive law. According to the invention, the tracking error is stabilized to zero in a fixed time; and continuous control input is realized.

The utility model relates to the technical field of optical fiber defect detection, and discloses an optical fiber end face defect observation and detection device which comprises an optical fiber suite, an optical fiber fixing structure, an observation mirror structure, a supporting structure and an illumination structure, the optical fiber suite is fixed above the supporting structure through the optical fiber fixing structure, and the observation mirror structure is located in the opposite direction of the optical fiber suite. The angles of the optical fiber suite and the observation mirror structure can be adjusted; the illumination structure is located beside the observation mirror structure and used for providing directional illumination. The supporting structure comprises a lower bottom plate, a sleeve bottom plate, a stand column sleeve and a stand column, the sleeve bottom plate is fixed to the center of the upper end of the lower bottom plate, the stand column sleeve is arranged in the center of the upper end of the sleeve bottom plate, and the bottom end of the stand column is fixed in the stand column sleeve through screws. The device is simple and small in structure, the observation mirror and the end face angle of the optical fiber can be adjusted, meanwhile, the illumination structure can assist in illumination, end face defects of the optical fiber can be observed and detected conveniently, and the detection precision can be improved.

The invention discloses a culture device for a high-flux biological culture system. The culture device comprises a sealed box body with an inlet and an outlet; the C-shaped supporting mechanism is arranged in the box body; the rotating platform mechanism is arranged in the C-shaped supporting mechanism and is used for placing a culture pore plate; the rotating platform mechanism further comprises a bidirectional clamping mechanism arranged on the tray. Compared with an existing cell or organ-like biological culture device, the cell or organ-like biological culture device has the advantages that the culture environment consistency of all pore plates in the culture process is better, and the disturbance to other pore plates is lower when the pore plates are taken; in the culture and observation process, strict environmental conditions can be maintained, the pore plate does not displace, and a more adaptive space moving range is provided for a monitoring and pipetting integrated device with higher observation and analysis speed, so that the requirements of high throughput and low disturbance of a high throughput biological culture system under the industrial and automatic background can be met; technical and theoretical possibilities are provided for successful cell or organoid culture and observation of an intelligent automatic production line.

The utility model discloses an anorectal department hand-held dosing device relates to hand-held dosing ware technical field, including applying tube and dosing tube, applying tube is located in the dosing tube, the arc surface of dosing tube is fixedly connected with support plate, the upper surface of support plate is threadedly penetrated with screw, the lower end of screw is rotatingly connected with connecting plate, and the connecting plate is connected with the connecting plate. The lower surface of the connecting plate is uniformly and fixedly connected with two pressing rods, the arc surface of the dosing tube is fixedly connected with two T-shaped rods, the arc surfaces of the T-shaped rods are rotatably connected with two circular tubes, the arc surfaces of the two circular tubes are fixedly connected with an L-shaped plate, and the pressing rods are located on one side of the L-shaped plate. The effect of supporting the buttocks of the patient in the anus dosing process of the anorectal patient is achieved, and the problems that the exposed position of the anus is small when the buttocks are supported with one hand for dosing, multiple persons need to operate at the same time when the buttocks are supported with two hands, and the overall tedious process is improved are solved.

The invention provides an unmanned aerial vehicle for intelligent identification of a polar ice rink. The unmanned aerial vehicle comprises an aerial vehicle main body, a solar battery pack, rudder wings, a spiral propeller and an observation cabin, the aircraft is powered by solar energy, so that long endurance time can be achieved; the rudder wings are symmetrically installed on the two sides of the aircraft body to achieve lifting and steering of the aircraft body. The spiral propeller provides propulsive force and cooperates with the rudder wings to complete lifting steering motion. A plurality of functional modules are arranged in the observation cabin, and the functions of ice rink recognition, aircraft and transport ship positioning, data transmission, state monitoring and the like can be achieved. Illumination warning lamps are arranged on the front edges of the two wings of the aircraft, so that ice rink identification and aircraft landing under the extremely night condition are facilitated. The invention also provides a polar ice rink intelligent identification method of the unmanned aerial vehicle. The sea ice morphology around the navigation channel can be observed in detail and accurately, accurate sea ice data can be obtained, the polar transport ship is helped to sail, a captain is assisted to make a decision, and the risk of distress is reduced.

The invention discloses a model display control method and device based on a digital twin system, and a medium. The method comprises the following steps: acquiring comprehensive information of a model; performing polygon simplification on the components of the model according to the simplification rate of the components in the comprehensive information to obtain a simplified component set; and rendering the component set according to the attribute data of the component set, and performing display control on the component set of the rendered model. According to the model display control method and device based on the digital twin system and the medium, accurate polygon simplification is performed on model components by using the simplification rate, and the model data volume is remarkably reduced, so that the loading speed is increased, and the system performance is improved; according to the method, rendering and display control are carried out by utilizing the attribute data of the component set, so that the model can still present a high-quality visual effect after being simplified, and the problem that the loading speed of the model is difficult to improve so as to carry out effective display control on the model can be solved.

The utility model discloses a liquid dropping detection device for lubricating oil detection, which comprises a base, a collecting box is arranged in the middle of the upper end of the base, the collecting box is attached to the base, a transparent oil storage tank is arranged on one side of the upper end of the base, a tank cover is arranged at the upper end of the transparent oil storage tank, and the liquid dropping detection device further comprises a first transmission cavity, the first transmission cavity is formed in one side of the interior of the base, a threaded rod is rotationally arranged on one side of the interior of the first transmission cavity, a lifting plate is in threaded connection with the exterior of the threaded rod, one end of the lifting plate extends to the exterior of the first transmission cavity, and a liquid dropping nozzle is arranged at the end, located outside the first transmission cavity, of the lifting plate. According to the dropping liquid detection device for lubricating oil detection, the distance between the dropping liquid nozzle and the collection box can be controlled, so that the proper dropping speed can be adjusted, the applicability is improved, detection is facilitated, the dropping area of lubricating oil can be illuminated through the illuminating lamp, and the practicability is good.

The invention provides a high-power laser diameter measuring device, which is characterized in that a first reflector and a second reflector are respectively arranged on a light path of a to-be-measured high-power laser beam entering a detector, and the part, shielded by the first reflector, in the laser beam is reflected to a first collector by the first reflector; the part, shielded by the second reflector, in the laser beam is reflected to the second collector by the second reflector; the first reflector and the second reflector are both installed on the first support, and the first support is integrally installed on a displacement table set composed of a first displacement table and a second displacement table through a connecting plate. The first telecentric lens, the first image sensor, the second telecentric lens and the second image sensor are respectively used for real-time observation of the first reflector and the second reflector. The high-power laser diameter measuring device provided by the invention can reduce the source of diameter measurement errors and improve the measurement accuracy, can be used for directly measuring the laser diameter, and can also be used as a measurement standard device to calibrate other high-power laser spot analyzers.

The utility model provides an endoscope camera convenient to adjust angle, relates to endoscope technical field, including device body and endoscopic mechanism, the surface of device body is equipped with the display screen, the lower part of display screen is equipped with the control box, one side of device body is equipped with the flexible pipe, the flexible pipe is equipped with the control box. And a mounting plate is mounted on the other side of the interior of the hose, a rotating mechanism is mounted at the top of the mounting plate, and an endoscopic mechanism is mounted at the top of the rotating mechanism. According to the endoscope camera convenient to adjust the angle, through the arrangement of the endoscopic mechanism, a doctor can freely adjust the angle and the direction of the camera according to needs so as to obtain more comprehensive and accurate image information and more accurately observe the conditions of the upper side and the lower side in the body of a patient; therefore, a doctor can better observe details and lesion conditions in the body of a patient, the diagnosis accuracy of the doctor is greatly improved, precious treatment time is saved, and the pain of the patient is relieved.

The invention discloses an image processing-based tongue swab sample fluorescence detection method for Mycobacterium tuberculosis, and relates to the technical field of image processing, the image processing-based tongue swab sample fluorescence detection method comprises a flora monitoring module, an image analysis module and a concentration determination module, the flora monitoring module is used for identifying a flora culture solution and monitoring flora on the flora culture solution in real time, and the concentration determination module is used for determining the concentration of Mycobacterium tuberculosis; the image analysis module is used for carrying out straight division processing and flora contour fitting on a shot image, and the concentration determination module is used for analyzing the flora size, the shape and the life cycle of mycobacteria in image data to carry out targeted fluorescent agent concentration adjustment on florae with different growth conditions. The flora monitoring module comprises an image monitoring unit and a flora culture solution recognition module, the image monitoring unit is electrically connected with the flora culture solution recognition module and the flora recognition module, and the flora culture solution recognition module is electrically connected with the flora recognition module.

The embodiment of the invention provides an eyepiece and an eyepiece optical system. Wherein the eyepiece comprises a first lens group and a second lens group which are arranged along the same optical axis, the first lens group is located on the exit pupil side, and the second lens group is located on the focal plane side; the first lens group comprises a first lens, a second lens and a third lens; the second lens group comprises a fourth lens; a polarization reflection element is arranged on the side, away from the second lens, of the first lens, a light splitting element is arranged on the side, away from the second lens, of the third lens, and a phase retarder is arranged between the polarization reflection element and the light splitting element. The eyepiece satisfies the condition that [(1 / f)-(1 / F1)] / (1 / F2) is more than 0.065 and less than 0.07; wherein f is the total focal length of the eyepiece, F1 is the focal length of the first lens group, and F2 is the focal length of the second lens group.

The present invention discloses a voltage clamping circuit for testing the dynamic resistance of a wide bandgap semiconductor switching device, including: a high-voltage blocking subcircuit, a voltage stabilizing subcircuit, an anti-oscillation subcircuit, a filtering subcircuit and an FPGA main control circuit, which has the characteristics of low measurement delay. The present invention also discloses a controllable test condition device for testing the dynamic resistance of a gallium nitride HEMT, including a voltage clamping circuit, a voltage stress control circuit, a current control circuit, a switch mode control circuit, and a package temperature control circuit for testing the dynamic resistance of a gallium nitride HEMT. Under the premise of greatly reducing the detection delay, various factors in the detection process can also be controlled to provide a guarantee for the accuracy of detecting the dynamic resistance. The present invention also discloses a test system for testing the dynamic resistance of a gallium nitride HEMT, which can restore the real application environment for detecting the dynamic resistance, thereby completing the accurate observation of the dynamic resistance.

The invention relates to the technical field of image analysis, in particular to a general surgery department surgical incision image analysis method and system, and the method comprises the following steps: removing background noise and a non-target region in an image based on an initially collected surgical incision image, adjusting the brightness and contrast of the image, and compressing and decompressing image data through a self-encoder, and stable features in the image data are extracted. According to the method, the definition of image data and the accuracy of analysis are ensured by finely adjusting the brightness and the contrast ratio of the image and accurately removing irrelevant noise, so that the observation of the incision healing process is more accurate, and the application of the auto-encoder is excellent in the aspect of extracting stable features of the image; according to the method, key information is quickly identified from complex data, an abnormal image deviating from normal healing is identified by using an isolated forest algorithm, and the development trend of abnormity is analyzed through an LSTM network, so that the ability of early judgment of complications is greatly improved.

The invention discloses a space variable-gravity on-orbit fluid experiment system and method in the technical field of space fluid management, and the system comprises a variable-gravity centrifugal platform which is used for manufacturing a variable microgravity environment required by an experiment; the experiment box is mounted on the variable-gravity centrifugal platform, and an experiment storage box and a liquid storage box are arranged in the experiment box; the electric control box is arranged on the variable-gravity centrifugal platform and is connected with an electronic device in the experiment box; a box body of the experiment storage box is made of a transparent material, a gas-liquid interface in the experiment storage box can be observed, and the liquid storage box is used for storing a liquid working medium; the experiment storage box is provided with observation scales, and the observation scales are arranged in the centrifugal acceleration direction of the variable-gravity centrifugal platform so that the filling ratio of liquid in the experiment storage box can be observed through centrifugal force.

The invention relates to an endoscope image recognition method which comprises the following steps: acquiring an endoscope detection item, and determining a recognition area, a recognition target and recognition precision of the endoscope detection item; performing image acquisition on the recognition area through the endoscope; the collected endoscope image is preprocessed; according to the endoscope detection item, the preprocessed image is recognized through a preset image recognition model, and a recognized recognition target is output. The method has the effect of improving the endoscope image recognition efficiency and recognition precision.

The invention provides a method for judging a termination point of preparation reaction of 107 silicone rubber based on current of a stirring motor. The preparation method of the 107 silicone rubber comprises the following steps: polymerizing dimethyldichlorosilane hydrolysate under the action of a catalyst, monitoring current change on line, reaching a preset value, terminating the reaction, and performing post-treatment to obtain the 107 silicone rubber. When the 107 silicone rubber is synthesized, the reaction endpoint is determined by adopting a current method, and the influence of external factors on the judgment of the reaction endpoint is reduced by monitoring the current change in the reaction process in real time, so that the preparation reaction endpoint of the 107 silicone rubber is accurately judged, and the accurate control on the reaction process is realized.

The utility model discloses a grinding aid metering device which comprises a storage tank, one side of the storage tank is connected with a metering device, a tank cover is arranged above the storage tank, and an adjusting device is arranged at the top end of the tank cover. The adjusting device comprises a flow choking block, a matching block, a matching groove, a screw rod, an ejector block, a connecting pipe, a driven wheel, a rotating pipe, a fixed pipe, an inner gear, an outer gear, a thread sleeve, a driving wheel, a motor and a push spring, the matching block is slidably installed in the matching groove, the screw rod is installed in the thread sleeve, the ejector block is connected with the flow choking block through the push spring, the inner gear is meshed with the outer gear, and the driving wheel is installed at the output end of the motor; the driven wheel is fixedly connected to the outer side of the rotating pipe, a leveling device is arranged at the bottom end of the storage tank and comprises a supporting block, an adjusting rod and a connecting frame, the connecting frame is arranged at the bottom end of the storage tank, the adjusting rod is connected with the connecting frame through threads, and the supporting block is arranged at the bottom end of the adjusting rod. Therefore, the cement production efficiency and quality are improved.

The utility model relates to a trace burette fixing device, which comprises a base, a support rod, a titration clamp, a magnifying glass and a trace burette, the trace burette comprises a liquid injection tube, a graduated measuring tube and a solid glass column, the upper part of the liquid injection tube is clamped and fixed through the titration clamp, the titration clamp is arranged on the support rod, and the magnifying glass is arranged on the base. The bottom of the supporting rod is fixed on the base, the base is provided with a supporting sleeve corresponding to the solid glass column, the supporting sleeve is inserted into the base, the solid glass column of the micro burette is inserted into the supporting sleeve, and the magnifying glass is arranged corresponding to the scale marks of the scale measuring tube. The micro burette is doubly fixed by adopting the support sleeve and the titration clamp up and down, so that the micro burette is not easy to shake in the test process, the operation error is reduced, and the test efficiency is improved; the magnifying lens can be better used for test reading, and the accuracy of test results is improved; the device is simple to operate, convenient to disassemble and assemble and accurate in test data, and has positive popularization significance.

The invention relates to the field of rock core clamping equipment, and discloses a portable field rock core comparison detection holder which comprises a clamping box body, and a clamping platform, a fixed boss, a movable boss, two pistons, a plurality of groups of positioning shafts, a first positioning part, a second positioning part and a rotating part are arranged in the clamping box body; a plurality of positioning pins are arranged on the first connecting plate and the movable boss; the first positioning part can drive the second positioning part to synchronously adjust the position of the piston when the movable boss moves to the preset position of the rock core, and the first positioning part can also adjust the position of the positioning shaft in the process of moving the movable boss, so that each group of positioning shafts move towards the circle center direction of the adjacent clamping opening. According to the invention, stable clamping of rock cores with different lengths is realized, and detection errors of subsequent comparison are eliminated or reduced.

The invention belongs to the technical field of synchrotron radiation technology and laser welding, and discloses a myriawatt laser welding in-situ observation device based on high-energy synchrotron radiation technology, which comprises a laser connected with an incident optical fiber and used for generating laser; and the base comprises a horizontal displacement mechanism, a lifting table and a clamping mechanism, and the clamping mechanism is used for fixing a sample piece to be welded. A relatively closed space is created through the reaction cover, and smoke dust generated by laser welding is pumped away from the top through the dust removal equipment so as to meet the requirement for protecting the in-situ environment; the reaction cover is provided with the high-energy X-ray observation window, the dynamic evolution process of a molten pool and a small hole in the welding process can be recorded in real time through the high-energy X-ray observation system while laser welding is conducted, and therefore the myriawatt-level laser welding molten pool and the small hole can be observed more accurately.

The utility model provides a full-spectrum LED head scanning device, which relates to the technical field of medical equipment and comprises a full-spectrum LED scanning device, a supporting buffer structure and a fixing structure. A controller is arranged on the full-spectrum LED scanning equipment, a connecting base is arranged at the bottom of one side of the full-spectrum LED scanning equipment, a supporting block is fixedly connected to the top of the connecting base, a lying bed is arranged at the top of the supporting block, and a supporting buffer structure is arranged on the lying bed; according to the supporting and buffering structure, a fixing pad is arranged at one end of the top of the lying bed, and a sponge pad is arranged on the fixing pad; one end of the lying bed is fixedly connected with an extending convex plate, the bottom of the lying bed is fixedly connected with a right-angle bottom frame, through the arrangement of the supporting buffer structure, when a patient lies down, the head and the neck can descend in a coordinated mode, discomfort caused by height difference is avoided, and the patient can be kept in a more relaxed state in the scanning process; especially for long-time fixed posture scanning, the fatigue feeling of the body is greatly relieved, and the comfort degree of the whole detection process is improved.

The invention provides a pixel-level vegetation water consumption calculation method based on a multi-dimensional feature space in the technical field of remote sensing monitoring, and the method comprises the steps: calculating the surface net radiation Rn through satellite remote sensing data and GLDAS grid meteorological data, and then calculating the soil heat flux G; constructing a four-dimensional feature space by using four variables including canopy coverage Fc, surface temperature Ts, near-surface temperature Ta and wind speed Ws; then the maximum surface temperature Tsmax and the minimum surface temperature Tsmin are determined; a high-dimensional dry boundary and a high-dimensional wet boundary are obtained through fitting solving by means of the least square method; and calculating the daily water consumption of the vegetation in the target area through the evaporation ratio. According to the method, pixel-level accurate observation is provided for vegetation water consumption in a macroscopic area, support can be provided for hydrological cycle research in an ecological system, and a basis can be provided for a water consumption rule and irrigation requirements of crops.

This invention belongs to the field of daily chemical products technology, specifically relating to an antibacterial care liquid and its preparation method. It is processed from main ingredients and auxiliary ingredients. The auxiliary ingredients include the following components by weight percentage: purified water 89.30%, silver ions 3%, honeysuckle extract 1.2%, wild chrysanthemum extract 1.2%, purslane extract 1.2%, clover extract 1.0%, gentian root extract 1.0%, hyaluronic acid 0.5%, carbomer 0.8%, and triethanolamine 0.8%. The main ingredient is American cockroach extract, and the weight ratio of the main ingredient to the auxiliary ingredients is 3:100. The product of this invention has the effects of repairing skin cells and slowing down skin aging. It can solve the problems of dry and loose skin, and at the same time, it can resist acne and pimples, remove acne marks, lighten scars, and make the skin moist, shiny, and elastic. It also has a good repairing effect on various wounds such as ultraviolet rays and radiation burns, as well as bedsores and frostbite.

The present invention relates to a three-dimensional pile-soil interaction test method and test system based on magnetic induction tracing and quick freezing soil consolidation technology, including a horizontal cyclic loading test platform for simulating the long-term vibration environment of offshore wind turbine pile foundations, a magnetic induction tracing system for real-time monitoring of the position and motion characteristics of sand particles, a terrain modeling and analysis system for real-time recording of terrain changes around piles, and a quick freezing soil sectioning system for observing the motion morphology of sand particles inside a sand bed. Using the horizontal cyclic loading test platform, according to the designed test conditions, horizontal cyclic loads of different amplitudes and frequencies are applied to aluminum alloy semi-cylinder model piles; the three-dimensional pile-soil interaction under different loading conditions is studied by using the magnetic induction tracing system, the terrain modeling and analysis system, and the quick freezing soil sectioning system.

The application discloses an AFS, ARS and DYC cooperative control method of a distributed electric drive vehicle based on DDPG. The method utilizes a cooperative control method and a deep reinforcement learning method, designs and develops a vehicle stability control method based on a centroid side slip angle and a yaw angular velocity, takes driving signals provided by a driver and measured or estimated vehicle state information as input, and judges the stability of the vehicle. When the active safety system needs to intervene, a DDPG-AAD model trained offline by a strategy deep gradient algorithm is used to coordinately control AFS, ARS and DYC systems, precise and independent control of each wheel is realized, and thus the active safety driving stability of the vehicle is improved.

The utility model discloses a variable-focus artillery bore peeping instrument, which relates to the field of bore peeping instruments, and adopts the technical scheme that the variable-focus artillery bore peeping instrument comprises a main body and a variable-focus camera module, a plurality of supporting wheel sets are arranged on the periphery of the body in the radial direction. The variable-focus camera module is arranged at the front part of the main body; and the variable-focus camera module is connected to the control box through a wire harness. And the side wall conditions of the bores with different depths can be accurately and clearly observed through the focusing system, so that the omission of fine defects can be effectively avoided.