63results about How to "Accurate observation" patented technology

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 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 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 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 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 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 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.

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 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.

The utility model relates to the technical field of water conservancy and hydropower, and discloses a structure for water conservancy and hydropower, which comprises a fixed end plate fixed in a river channel and a water level gauge fixed on the fixed end plate, and scales are arranged on the front end face of the water level gauge in an offset printing mode and used for displaying the height of the water level. A cleaning floating disc is arranged on the water level gauge in an up-down sliding mode, and a cleaning disc used for cleaning the scale face is arranged on the front end face of the cleaning floating disc. According to the utility model, the exposed scale part can be automatically cleaned after the water level is changed, so that the visual degree of the scale is higher, and accurate observation is facilitated.

The invention provides an electrical parameter measuring device and method for a rock and soil sample. The device comprises a device base, a horizontal holder assembly, a pressure assembly, an AB power supply electrode assembly, a top end M and N spring electrode assembly, a lateral MN probe electrode assembly and an electrical parameter measuring module. Two horizontal clamp assemblies are symmetrically arranged on the left side and the right side of the device base, pressure assemblies are installed on the horizontal clamp assemblies and abut against the AB power supply electrode set, the top end M and N spring electrode assemblies are installed at the two ends of the middle of the device base and stretch across the device base, and the lateral MN probe electrode assembly is installed on the rear side of the device base. And the electrical parameter measuring module is connected with an electrode column on the device base. The technical problems that in a traditional method, clamping force is difficult to control, contact is poor, current distribution is uneven, the process is opaque, data cannot be post-processed and the like are solved, and universalization, high precision and repeatable measurement of rock and soil samples are achieved.

The invention discloses a safe and reliable QUIC protocol transmission method based on adaptive congestion control. The method comprises the following steps: recording the bandwidth of each transmission path in a network and the size of a node buffer area; a data transmission path and time delay from each sending node to each receiving node under the current network condition are set in the central server; when a sending node sends a data stream to a receiving node, identifying whether the sent data stream is an elephant stream: if the sent data stream is not the elephant stream, directly sending the data stream to the receiving node to complete data pre-sending; if the sent data stream is an elephant stream, corresponding information needs to be transmitted to the central server, the central server pre-estimates the network condition again and inputs the network condition into the trained Q-Learning deep learning algorithm, and a proper transmission path is selected; and according to the selected transmission path, the central server calculates the time delay of the data reaching each node in the transmission path, stores the time delay, updates the record of the network condition, and completes the network transmission.

The application discloses a non-singular fast terminal sliding mode vibration active control method based on a compensation function observer, 1) according to elastic dynamics, a fourth-order modal equation of a four-side fixed support plate structure driven by an electromagnetic inertial actuator is established; 2) in view of external unknown interference and modeling uncertainty existing in the system, a compensation function observer is designed to realize real-time estimation and compensation; 3) a non-singular fast terminal sliding mode surface is constructed, and a sliding mode control law is designed in combination with the observer output, so that the singularity problem of a traditional terminal sliding mode is solved, and the time for system state to reach a balance point is shortened through a fast convergence term; 4) a comparison experiment is designed, and the composite control method designed in the application can significantly reduce the vibration amplitude of the four-side fixed support plate while guaranteeing the finite time stability of the system, and has stronger anti-interference ability and higher vibration suppression precision compared with the traditional sliding mode control.

The invention relates to the technical field of mechanical sealing, and discloses a pump bearing mechanical sealing structure which comprises a pump outer shell. The movable shaft is rotationally mounted in the pump outer shell; the mounting seat is fixed in the pump outer shell; the static sealing seat is fixed in the pump outer shell; the static sealing ring is arranged on the static sealing seat; the dynamic sealing structure is arranged in the pump outer shell, and the dynamic sealing structure is matched with the static sealing ring to form mechanical sealing; and the mounting bracket is fixed in the pump outer shell. By arranging the dynamic sealing structure, after the pump body stops working, the dynamic sealing ring and the static sealing ring are separated from each other through a series of mechanical operations, the dynamic sealing ring and the static sealing ring can be conveniently and thoroughly washed and cleaned, then impurities attached to the dynamic sealing ring and the static sealing ring can be effectively removed by introducing water to a specific part and utilizing the flowing effect of water flow, and the service life of the pump body is prolonged. Therefore, abrasion of the impurities to the sealing ring is avoided.

This utility model belongs to the field of crop carbon conversion measurement technology, and specifically discloses a device for detecting the soil organic carbon activation effect of straw return to the field. It includes a planting unit, a first soil detection unit and a gas detection unit. Crops are planted in the planting unit, and then the liquid phase sample of the soil is detected in real time using the first soil unit. Then, the carbon content of the gas in the planting unit is detected using the gas detection unit, so as to obtain the dynamic changes of the organic carbon activation effect during the straw return process.

This utility model provides a verticality testing device for water conservancy engineering surveying, relating to the field of water conservancy engineering. The device includes a worktable with four support rods fixedly installed on its bottom surface at the four corners. Two plumb lines are fixedly installed on the bottom surface of the worktable, with a plumb bob A fixedly installed at the bottom end of each line. Two swing mechanisms are fixedly installed on the upper surface of the worktable, arranged vertically. A vertical tube is fixedly installed on the worktable, penetrating downwards through the worktable, with its inner hole extending through the worktable. Two arc-shaped plates are fixedly installed at the upper end of the tube, with a rotating ball positioned between them, allowing the ball to rotate omnidirectionally relative to the plates. This verticality testing device for water conservancy engineering surveying, through the use of a rotating ball, testing blocks, and a lever, achieves a convenient effect in detecting verticality, offering better results than traditional conical plumb bobs.

The utility model belongs to the field of medical supplies and instruments, and discloses a urinary bag for clinical diagnosis and treatment in urinary surgery, which comprises a urine collecting bag, a liquid inlet pipe and a liquid outlet pipe connected with the urine collecting bag, a connector connected with a connecting snap ring, a connecting cylinder connected with the liquid outlet pipe, a piston plate slidably connected with the connecting cylinder, and a connecting sleeve connected with the piston plate. The piston plate is connected with a push rod which is connected with a push plate, and the connecting cylinder is connected with a drain pipe; according to the technical scheme, urine cannot be directly sprayed out from the opening, so that the urine is prevented from being sprayed to hands, and the use sanitation is improved; opening and closing are completed by pushing the piston to move, the structure is simple, operation is convenient, manufacturing cost is low, clinical use is convenient, use stability is high, liquid drainage is not prone to occurring, and practicability is greatly improved.

The utility model relates to a deep-frying protection device for casing testing, which comprises a protection cover arranged above a deep-frying groove on a deep-frying pan, the protection cover is sleeved on the outer side of the top of the deep-frying groove in a limiting manner, an observation hole and a temperature measuring hole are arranged on the side wall of the upper part of the protection cover, and a vertical avoiding opening for avoiding a handle of a deep-frying basket is arranged on the outer side wall of the lower part of the protection cover. The protective cover can block splashed oil drops and prevent an operator from being scalded, the temperature measuring hole and the observation hole are reserved, the temperature measuring gun can accurately measure the temperature through the temperature measuring hole, meanwhile, the ventilation condition of a casing and when the casing is cracked or peeled can be observed at any time through the observation hole in the frying process, the avoiding opening is formed, and the casing is prevented from being broken or peeled. The frying basket handle can be held outside the protective cover to move the frying basket upwards, the sausage is separated from oil, and observation is more accurate.

The utility model discloses a test tube colorimetric structure, including base, the base top is equipped with baffle, still be equipped with test tube area and colorimetric card area through the baffle separation of base top, be equipped with the test tube movement structure of test tube area location, still be equipped with the colorimetric card limiting portion of colorimetric card area location, be equipped with the first light source of the test tube of the illumination in test tube area, be equipped with the second light source of the illumination of colorimetric card in colorimetric card area. The utility model provides a test tube colorimetric structure, when carrying out colorimetry to test tube and colorimetric card, and it is not easy to appear the problem of partial color, and the colorimetry accuracy is higher.

A rare earth crystal observation method based on a deep learning model combined with a watershed algorithm, comprising the following steps: step 1: preparing a rare earth crystal structure image dataset, dividing the entire dataset into a training set and a test set; step 2: data augmentation is performed on the training set images; step 3: the improved Unet3+ deep learning model is trained using the training set, and the segmentation model is evaluated on the test set according to the image segmentation evaluation index, to obtain the final image segmentation model, which is used to predict the crystal structure image to obtain the original segmentation result image; step 4: for the original segmentation result image, a post-processing is performed thereon by using a watershed algorithm; and step 5: the final segmentation result image obtained after the post-processing in step 4 is observed, and the feature information of all connected regions is counted by using an OpenCV library. The present application can provide faster and more accurate crystal segmentation and statistical analysis.

The utility model relates to the technical field of building pipeline construction, in particular to a building pipeline construction grooving and scribing device which comprises a plate trailer, two universal wheels are installed on the left side of the bottom of the plate trailer, a fixing frame is fixedly connected to the bottom of the plate trailer, a fixing rod is arranged on the left side of the fixing frame, two brushes are connected to the periphery of the fixing rod in an inserted mode, and the two brushes are arranged on the plate trailer. Two fixing plates are fixedly connected to the right side of the bottom of the plate trailer, a rotating shaft is rotationally connected between the two fixing plates, two wheels are installed on the outer side of the rotating shaft, a bevel gear d is installed in the middle of the rotating shaft, and a bevel gear b is installed in the middle of a fixing rod; the scribing device has the beneficial effects that dust can be cleaned while the brush is driven by pushing the plate trailer to perform scribing, so that the situation that the scribing path is blurred due to the fact that the dust covers the scribing path is reduced, workers can observe the scribing position more accurately, and construction errors are reduced.

The invention discloses a single bubble derivation detection system and method. The system comprises a multi-phase reactor, bubble generation equipment, image acquisition equipment and image processing equipment, wherein the multi-phase reactor is used for generating a target bubble environment; the bubble generation equipment is used for generating single bubbles at a fixed rate and transmitting the single bubbles to a target bubble environment for derivation; the image acquisition equipment is used for synchronously sending a plurality of first bubble images acquired at a first shooting view angle and a plurality of second bubble images acquired at a second shooting view angle to the image processing equipment in a derivation process of a single bubble; and the image processing equipment is used for detecting the derivation track of the single bubble based on the received first bubble image and the second bubble image, and determining derivation track information of the single bubble. According to the technical scheme provided by the embodiment of the invention, the motion trail in the derivation process of the single bubble can be detected, and the stress and breakage probability of the bubble can be further analyzed.