38results about How to "Easy to observe intuitively" patented technology

The invention discloses a cable fault positioning simulation method using time domain reflectometry. The method includes the following steps that S100, a cable distributed parameter circuit model is established through Pspice simulation software according to the operating parameter of a cable to be detected; S200, an equivalent circuit model of a pulse generator and an equivalent circuit model of an oscilloscope are established through the Pspice simulation software, wherein different pulse widths can be set in the pulse generator; S300, the model of coaxial cable transmission lines connected among the cable to be detected, the pulse generator and the oscilloscope and the model of coaxial cable transmission line connecting points are established; S400, the simulation system is made to operate according to an established artificial circuit model, the traveling wave propagation process of any node is tested, and meanwhile the actual reflected impulse waveform of the cable to be detected can be tested. By the adoption of the cable fault positioning simulation method, the operation accuracy of simulation experiments is improved, and extremely high application value is achieved to application and study of a time domain pulse method.

The invention provides a method for acquiring a vocal organ profile in a medical image. The method comprises the following steps of: for the medical image, performing binaryzation on the lip and a background area in the medical image by using an automatic segmentation threshold of the lip and the background so as to acquire a lip profile; extracting an upper tooth profile, a lower tooth profile, an upper jaw profile and a lower jaw profile in a face range included in the lip profile; for an image area between the upper jaw profile and the lower jaw profile, acquiring a reliable edge point of a tongue profile; and fitting a tongue edge profile by the reliable edge point of the tongue profile. By the method, the vocal head part and the organ area can be automatically segmented from the image background, and the whole process is automatically completed without manual interaction.

The invention discloses a method for quickly establishing an intracranial blood vessel simulation three-dimensional model based on transfer learning. The method comprises the following steps: collecting a bright blood image group and an enhanced black blood image group of an intracranial blood vessel part; preprocessing each bright blood image and the corresponding enhanced black blood image to obtain a first bright blood image and a first black blood image; performing image registration on the first bright blood image by using mutual information based on Gaussian distribution sampling and a registration method of an image pyramid; utilizing a maximum intensity projection method to obtain MIP images in all directions from the registered bright blood image groups; taking the MIP image as atarget domain, taking the fundus blood vessel image as a source domain, and obtaining a two-dimensional blood vessel segmentation image by using a transfer learning method; performing back projectionsynthesis on the two-dimensional blood vessel segmentation images in the three directions to obtain first three-dimensional blood vessel body data; and obtaining an intracranial blood vessel simulation three-dimensional model by utilizing the second three-dimensional blood vessel body data corresponding to the registered bright blood image group. According to the method, the whole state of the intracranial blood vessel can be simply, conveniently, quickly and visually obtained clinically.

The invention discloses an automatic verification system for the performance of an insulation monitoring module. The automatic verification system comprises a power supply module, a resistance-capacitance module, a CAN communication module and an MCU control module, wherein the resistance-capacitance module comprises a plurality of resistors, a plurality of capacitors and a plurality of electric control switches, and is electrically connected with the insulation monitoring module, a total positive electrode and a total negative electrode of the high-voltage power supply and a frame ground wire to form a test loop; the MCU control module communicates with an upper computer through the CAN communication module; and meanwhile, on-off of each electric control switch connected with the resistance-capacitance module is controlled, and the performance of the insulation monitoring module is verified by switching on different combinations of resistors and capacitors. The system provided by the invention can automatically control the set voltage, resistance and Y capacitor to access the test loop, and can feed back to the system in a CAN communication mode after the insulation module is tested. The verification system not only solves the problems of low manual test efficiency and complicated process, but also can test the performance of the insulation module under the conditions of different voltage platforms, insulation conditions and whole vehicle Y capacitance.

The invention belongs to the technical field of detection equipment, and particularly relates to a cigarette packaging box adhesion testing device which comprises a bottom plate, a workbench, a power assembly and a clamp mechanism, the workbench is fixedly installed on the bottom plate, the power assembly and the clamp mechanism are both installed on the workbench, and the power assembly is connected with the clamp mechanism. The power assembly comprises a telescopic motor, a transmission rod and a supporting block, the telescopic motor is fixedly installed on the workbench, an output shaft of the telescopic motor is connected with one end of the transmission rod, the supporting block is installed on the workbench, and the tail end of the transmission rod penetrates through the supporting block and the clamp mechanism to be connected with the tail end of the transmission rod. The clamp mechanism comprises a clamping plate assembly, a tension assembly, a connecting plate and a mounting plate, the clamping plate assembly comprises two first clamping plates and two second clamping plates, and the problems that the mode of tearing manually and judging whether bonding is firm or not is not objective enough and cannot be quantified, and the judgment result is not accurate enough due to the fact that the tearing strength and modes of different people are different are solved.

The invention relates to the field of building detection tools, in particular to a portable bridge crack width measuring instrument. The portable bridge crack width measuring instrument comprises a cylinder body, wherein one end of the cylinder body is a measuring end; a measuring assembly is arranged inside the measuring end of the cylinder body, and the other end of the cylinder body is an observation end; an observation assembly is arranged inside the observation end of the cylinder body, and each of the measurement assembly and the observation assembly comprises a measuring rod which can extend from the side wall of the cylinder body; and the observation end of the cylinder body is also provided with a control assembly capable of enabling the measuring assembly and a measuring rod of the observation assembly to synchronously extend out. The portable bridge crack width measuring instrument is convenient to operate, simple in structure and easy to carry, and can perform visual comparison measurement on the width of the inside of a crack on a bridge, accuracy is guaranteed, and thus, the portable bridge crack width measuring instrument is beneficial to popularization and application.

The invention discloses an intracranial blood vessel focus identification method based on transfer learning. The method comprises the following steps: acquiring a bright blood image group, a black blood image group and an enhanced black blood image group of an intracranial blood vessel part; carrying out registration on each bright blood image by using a registration method based on mutual information and an image pyramid by taking the corresponding enhanced black blood image as a reference to obtain a registered bright blood image group; using the registered bright blood image group to perform flow empty artifact elimination operation on the enhanced black blood images in the enhanced black blood image group to obtain an artifact-eliminated enhanced black blood image group; subtracting the corresponding images in the artifact elimination enhanced black blood image group from the corresponding images in the black blood image group to obtain K contrast enhanced images; establishing a blood three-dimensional model by using the registered bright blood image group and adopting a transfer learning method; and establishing a blood vessel three-dimensional model of blood boundary expansion by using the registered bright blood image group; the focus area of the intracranial blood vessel can be simply, conveniently, quickly and visually recognized clinically.

The invention discloses a ditching device for fruit tree planting, and relates to the technical field of agriculture and forestry engineering equipment. The ditching device is mainly a ditching vehicle and comprises a working device and a steering control device, wherein the working device is in rotating fit with the steering control device. The ditching device for fruit tree planting is arrangedto be of a ditching vehicle structure, so that mechanical operation can be conveniently carried out in a relatively large-area planting process, manpower is saved, and the working efficiency is improved; the steering control device is arranged at the relative rear part of the working device for steering control, so that an operator can visually observe a working progress and a working state; meanwhile, the operator can determine the plant spacing needed by planting according to visual inspection, so that relatively large errors in work are avoided; harrow nails are arranged, so that soil in atarget area can be loosened before ditching of the ditching vehicle, and ditching is facilitated; and a fixing sleeve and a pneumatic sliding sleeve are arranged and are telescopically matched under the action of a pneumatic cylinder, so that a ditching drill bit can conveniently control the ditching depth in a ditching process.

The invention discloses a method for establishing an angiography enhanced three-dimensional stenosis analysis model. The method comprises the following steps: acquiring a bright blood image group, a black blood image group and an enhanced black blood image group of a blood vessel part; performing image registration on each bright blood image by using a registration method based on mutual information and an image pyramid to obtain a registered bright blood image group; carrying out flow empty artifact elimination operation on the enhanced black blood image by utilizing the registered bright blood image group to obtain an artifact-eliminated enhanced black blood image group; establishing a blood three-dimensional model and a blood vessel three-dimensional model by using the registered bright blood image group; obtaining a contrast enhanced three-dimensional model based on the artifact elimination enhanced black blood image group and the black blood image group; obtaining an angiography enhanced three-dimensional model; obtaining values of target parameters representing the vascular stenosis degree of each section of blood vessel in the angiography enhanced three-dimensional model, and marking the angiography enhanced three-dimensional model by utilizing the values of the target parameters of each section of blood vessel to obtain the angiography enhanced three-dimensional stenosis analysis model.

The invention discloses a method for establishing an enhanced three-dimensional model of an intracranial blood vessel based on transfer learning. The method comprises the following steps: acquiring a bright blood image group, a black blood image group and an enhanced black blood image group of an intracranial blood vessel part; carrying out registration on each bright blood image by using a registration method based on mutual information and an image pyramid by taking the corresponding enhanced black blood image as a reference to obtain a registered bright blood image group; using the registered bright blood image group to perform flow empty artifact elimination operation on the enhanced black blood images in the enhanced black blood image group to obtain an artifact-eliminated enhanced black blood image group; subtracting the corresponding images in the artifact elimination enhanced black blood image group from the corresponding images in the black blood image group to obtain K contrast enhanced images; establishing a blood three-dimensional model by using the registered bright blood image group and adopting a transfer learning method; and establishing a blood vessel three-dimensional model of blood boundary expansion by using the registered bright blood image group; The whole state of the intracranial blood vessel is simply, conveniently, quickly and intuitively obtained clinically so as to carry out intracranial vascular lesion analysis.

The invention discloses a VCM motor base structure, a VCM motor, a photographic device and an electronic product. The technical scheme is characterized in that the VCM motor base structure comprises abase body, which is provided with a dustproof ring, wherein the dustproof ring is higher than the bottom surface of the base body, a C-angle block is integrally formed at the included angle positionbetween the bottom face of the base body and the side wall of the dustproof ring, the C-angle block is arranged at the included angle position between the bottom surface of the base body and the sidewall of the dustproof ring in a plurality of sections or in a ring shape, the welding line of the base body is located at the position where the C-angle block is located, a metal reinforcing rib is arranged in the base body in an injection molding mode, a connecting terminal is arranged on the lower end face of the base body, and a lower spring in a VCM motor is electrically connected with the connecting terminal. According to the invention, the C angle is added between the dustproof ring and the bottom surface of the base, so that the joint line of the motor base can be prevented from cracking, and the strength of the base is effectively improved.

The invention provides a photostimulation responsive intelligent catalytic material loaded with a nanoparticle catalyst and a preparation method thereof. The catalytic material has a two-layer structure. One layer is a photostimulation responsive layer loaded with a nanoparticle catalyst and the other layer is a non-responsive base layer without the catalyst. The catalyst nanometer particles are coated with a macromolecule material by an in-situ reaction so that the aggregation and migration of the nano-catalyst are effectively prevented. Through the unique double-layer structure design, the photostimulation responsive intelligent catalytic material can spontaneously and responsively control starting and stopping of a catalytic reaction under irradiation of lights with different wavelengths, the shape of the catalytic system can spontaneously and responsively produce remarkable change so that the starting and stopping states of the catalytic process can be directly observed and judged with the naked eyes and industrial production actual operation is promoted.

The invention discloses a pressure-stabilizing flat-plate overflow valve for high-rise water supply of a smart city, and particularly relates to the field of smart cities. The pressure-stabilizing flat-plate overflow valve comprises a pressure-stabilizing overflow valve body and a control valve element, the pressure-stabilizing overflow valve body comprises a valve body and a control valve deck, and a liquid inlet end hole, a motion valve cavity and an overflow end hole are formed in the valve body; a motion sensing assembly, a control assembly and a hydraulic return assembly are fixedly installed in the pressure stabilizing overflow valve body, an abutting locking assembly is fixedly installed on the top surface of the control valve element, the top surface of the control valve element is fixedly connected with the end of the hydraulic return assembly, and a motion locking assembly is movably installed on one side of the motion sensing assembly. According to the scheme, a pressure measuring structure is arranged in the overflow valve, that is, the motion sensing assembly and the pressure sensing assembly are used for measuring the pressure of the front end of the valve and the flow hydraulic pressure respectively, the working power of a pump machine is changed through electric signals, pressure adjustment of the whole pipeline structure is completed, no extra pressure relief pipeline is required to be arranged, and the practicability of the valve body is improved.

The invention provides a simulation test system monitoring method and monitoring system based on a BS architecture. The method comprises the following steps: allocating an IP and a port to a simulation test system sub-module; iP and ports distributed by the simulation test system sub-modules are collected to form a configuration database; running state information of the simulation test system sub-module is collected and sent; receiving operation state information of the simulation test system sub-modules, reading the configuration database, and establishing a one-to-one correspondence mapping relation between IPs and ports in the configuration database and the simulation test system sub-modules; according to the mapping relation, packaging the operation state information of the simulation test system sub-modules to generate corresponding response data, and respectively sending the response data of different simulation test system sub-modules; receiving response data of the simulation test system sub-module, and judging the correctness of the response data; and the judgment result is processed, so that the serious influence on a simulation test or equipment can be reduced.

The invention discloses a vehicle road test detection system. The vehicle road test detection system comprises a data acquisition module, a processor module and a data acquisition and analysis module. The data acquisition module comprises a distance sensor module which is installed at the bottom of a to-be-detected vehicle and used for monitoring the distance between a vehicle chassis and the ground. The processor module comprises a central processor and a data memory module and is used for processing the information acquired by the acquisition module through the central processor and then sending the information to the data acquisition and analysis module. The data acquisition and analysis module comprises a display module which is used for displaying analysis information in time; when the vehicle body vibration state in the vehicle driving state needs to be analyzed and detected, the vehicle is driven into a test road section, different types of road surfaces are arranged, and in the vehicle driving process, a distance sensor installed at the bottom of the vehicle can detect the distance between a vehicle chassis and the road surfaces in real time, so that a vehicle vibration fluctuation graph is obtained; and detection personnel can perform visual observation conveniently.

The invention discloses a stereoscopic video display method and device based on image sparse features. The stereoscopic video display method based on the image sparse features comprises the following steps of: acquiring 3D image data; converting target information of all pixel points in the 3D image data into a target matrix, and according to an image sparse feature algorithm, calculating out a projection matrix of the target matrix, wherein target data comprises color information, three-dimensional information and illumination information; extracting pixel points corresponding to all non-vanishing vectors in the projection matrix to form a target pixel region; and carrying out compression on all the pixel points in the projection matrix except for the target pixel region, and according to the target pixel region of the 3D image data, reconstructing a 3D image to form a stereoscopic video. According to the technical scheme of the invention, a user can more easily and visually observe variations of a key region in a 3D image, and visual fatigue is reduced.

A method for forming silica stain on a substrate to facilitate monitoring of the silica stain during integrated circuit manufacture. The method includes providing a silica stain test structure which has a silicon substrate, a hydrophilic silicon dioxide containing layer disposed above the silicon substrate, and a plurality of cavities formed in the silicon substrate through the silicon dioxide containing layer. The cavities have hydrophobic sidewalls. The method also includes exposing the silica stain test structure to deionized water, and drying the silica stain test structure to form the silica stain on the silicon dioxide containing layer.