139results about How to "Deep understanding" patented technology

Provided is a ground automatic detecting and scene height calculating method based on a depth image. If h obtained through calculation of a certain point meets the condition that H1<h<H2 and d<Thsmooth, the point is judged to be on the ground. All points meeting the condition are extracted, a region with the largest area is found through a binary image labeling method, and the region is identified to be the ground. After the ground is judged, l3 of the ground region in an L_matrix is averaged to obtain indication of a plane normal vector under a camera coordinate system. An average value of the ground region h is the installing height of a camera. For any image point, a height calculation formula is as follows. By means of the method, the depth image is used for conducting ground automatic detecting, and the height between all the points and the ground is calculated in the scene according to a ground detecting result. The height information enables an intelligent monitoring system and an intelligent robot to understand the scene deeply and thoroughly.

The invention provides a floor water inrush early-warning system and method in coal mining, which belongs to the field of mine hydrogeology and mining engineering. The early-warning system comprises a microseismic monitoring system, a numerical value calculation system, a virtual reality system, a network transmission system and an early-warning forecast analysis center. The spatial array arrangement of a sensor network in microseismic monitoring system is the key to affect the reliability and the effectiveness of microseismic monitoring data. Hypocenter positioning errors are reduced. In a virtual three-dimensional geological environment, geological bodies can be visually, clearly and accurately displayed, which helps an analyst to deeply understand and analyze the formation, evolution and development of the geological bodies in an engineering area. Inspiration and help are provided for further revealing the geometric shape of hidden geological structures, determining the movement law of faults, clarifying stratum contact relation and intensively studying geography laws. Through the seamless connection and display of the microseismic monitoring data, stress analysis results and a three-dimensional geomechanical model, floor water inrush is monitored and early-warned in real time.

The invention relates to a fractalanalysis method for a crack propagation path ofa concretemember. The method comprises the following steps: (1) calculating an actual cracking loadvalue of the concrete member, performing stepwise loading accordingly, and lowering the increasing speed of the load when an external load value is close to a cracking load; (2) acquiring crack image information of the surface of the concrete member during each loading; (3) sharpening images, selecting a main crack, and correspondingly finding main crack images during each step of loading; (4) performing refinement segmentation processing according to a coating defined box-counting method, calculatingbasic parameter N(r) and r of the main crack during each loading, and performing regression with a computer to solve a fractal dimension value D; (5)establishing coordinates ona processedslit image, defining certain interpolation data points,inputting the interpolation data points into the computer to simulate fractal interpolation calculation in order to obtain length and morphological features of a slit of the concrete member, simulating prediction and saving a simulation result. By adopting the method, the failure law of the concrete member can be acquired more accurately.

The invention relates to a well testing interpretation model for analyzing a fracture-cave series mode double-hole composite reservoir, which comprises the following steps of: 1, establishing a corresponding physical model according to reservoir characteristics of a certain type of oil reservoir; 2, establishing a mathematical model, wherein the mathematical model is used for describing a physicalmodel; 3, solving the mathematical model to obtain a real space bottom hole pressure solution; and 4, drawing a real space well testing theoretical curve by utilizing a real space well bottom pressure solution, analyzing the well testing theoretical curve, performing curve fitting on theoretical pressure data and actually measured pressure recovery data to obtain a fitting result, and obtaining interpretation parameters which comprise fracture conductivity, fracture length, karst cave volume and karst cave storage capacity ratio. By solving the well testing mathematical model of the fracture-cavity series mode, the well bottom pressure solution of the fracture-cavity series mode is obtained, the typical well testing curve is drawn, the stratum parameters are obtained, the well testing interpretation method of the fracture-cavity series mode double-hole composite reservoir is determined, and the fracture-cavity type oil reservoir is accurately evaluated and effectively developed.

The invention discloses a simulation testing device for ship high-voltage electricity. The simulation testing device comprises a power distribution system, at least one set of high-voltage power distribution screens, an energy management controller and an adjustable load device. The power distribution system comprises two or more generator sets. Each generator set comprises a low-voltage alternating-current generator, a motor and a unit drive device. Each unit drive device comprises a unit drive controller, a transducer and an electric potentiometer. Each high-voltage power distribution screen comprises a load control screen, a generator control screen, a synchronous control screen and a connection control screen. The adjustable load device comprises a resistance load and an inductive load. The energy management controller is connected with the synchronous control screens, the connection control screens, the generator control screens and the unit drive devices through communication buses. According to the simulation testing device, the ship high-voltage power distribution screens are introduced into a laboratory, and therefore the situation that the laboratory is only provided with a low-voltage power distribution screen simulation system or a high-voltage power distribution screen simulation system in the past is changed.

The invention discloses a query representation and hybrid retrieval model construction method based on a context sensing theme. The method includes the following steps that firstly, a pseudo relevance feedback document of query is obtained on the basis of a keyword set of query, and context related to query is selected from the pseudo relevance feedback document; secondly, a context sensing theme model is introduced, the context is fused into the context sensing theme model, and implicit theme information of a context window is mined on the basis of a corpus theme to obtain a corresponding theme vector; thirdly, query is represented by combining the theme vector and the keyword set, a hybrid retrieval model is constructed on the basis of the theme vector and the keyword set, and a final retrieval score is obtained.

The invention is applicable to the technical field of 3D and provides a 3D shopping guide machine. The 3D shopping guide machine comprises a shopping guide machine body, an LCD (liquid crystal display) screen, an reflection device and a touch screen, wherein the LCD screen, the reflection device and the touch screen are arranged on the shopping guide machine body; the LCD screen is used for simultaneously highlighting and displaying images of an article at different angles; and the reflection device is a three-dimensional space composed of at least three surrounded pieces of acrylic, and the adjacent faces of the pieces of acrylic form a certain angle, the reflection device is used for displaying 3D images of the highlighted displayed images through reflecting and refracting, and the 3D images displayed at every angle are consistent in the display range of the reflection device. The 3D shopping guide machine can form consistent holographic 3D images at a 270-degree or 360-degree viewing angle, and simultaneously enables buyers to experience virtual try-on effect.

The invention discloses a stereoscopic image display machine based on interactive teaching. The stereoscopic image display machine is formed by arranging an imaging part, a folding part, a rotating part and a lifting part in sequence from bottom to top. During working, a linear push rod motor of the stereoscopic image display machine lowers the stereoscopic image display machine to be flush with a sight line in height; afterwards, a stepping motor of the stereoscopic image display machine is controlled to make a square crank drive a connecting rod to rotate, so that a guide rail elongates, and a trapezoidal frame and an organic glass plate fixedly connected to the trapezoidal frame are opened to form an angle of 45 degrees with the horizontal plane; next, the stepping motor of the stereoscopic image display machine is controlled to make the stereoscopic image display machine rotate, meanwhile, an LCD is turned on, and at this time, a stereoscopic image of the four different surfaces of a presented object can be seen at a position in a classroom through the stereoscopic image display machine. When not used, the stereoscopic image display machine is folded and lifted to a ceiling to achieve the purpose of saving space of the classroom. Besides, the stereoscopic image display machine has the advantages of being low in cost, multifunctional, high in service performance and the like.

The invention relates to a power distribution network situation sensing method based on the complex event processing technology and a decision tree, and the method comprises the steps: defining nodes, and generating a decision tree model according to a node rule and status values; obtaining the input data of the decision tree model; calculating and obtaining output data through employing the corresponding formulas of all nodes; comparing the output data of all nodes with expected values, and obtaining the state changes of the nodes; determining the node priority of the decision tree model, and obtaining an inference result. The method greatly improves the capability of a power distribution network for processing mass information and mastering a key situation under the condition of disasters, and provides decision support for the power distribution network for handling natural disasters.

The invention discloses a method for designing and constructing a pipeline valve noise reduction model. The valve model and the initial noise reduction model are established, and the flow channel model is extracted from the fluid domain. The flow channel model is meshed and divided into several sets of flow channel models with different number of meshes. The discharge coefficient and drag coefficient of the flow passage in the flow passage mesh model are calculated, and the results of the discharge coefficient and drag coefficient of the two flow passage mesh models are compared, and only oneflow passage mesh model is obtained. The numerical simulation is carried out, and the flow field is analyzed by the numerical simulation of the flow passage mesh model. The total pressure cloud picture and the velocity cloud picture are intercepted respectively. After analysis, the initial noise reduction model is adjusted to obtain the noise reduction model. The method of the invention can greatly reduce the manpower and material resources and generate smaller waste, and has practical significance in engineering.

A heat sink has a first flat plate, a partition plate, and a second flat plate. The first flat plate has an upper surface in which a first recess is formed. The second flat plate has a lower surface in which a second recess is formed, and an upper surface on which a semiconductor laser element is mounted. These recesses form a part of a refrigerant channel. The partition plate has a lower surface covering the first recess, an upper surface covering the second recess, and at least one through hole having the first recess communicated with the second recess. The first flat plate and the second flat plate both have a first coefficient of thermal expansion. The partition plate has a second coefficient of thermal expansion lower than the first coefficient of thermal expansion.

The invention discloses a method to quickly detect polyethylene pipe material rank of ISO9080, it includes (1) detect polyethylene pipe material structure distribution in condensation state, the structure distribution in condensation state includes mass per centum content distribution of crystal phase, interface phase and amorphism phase;(2)compute the mass per centum content distribution of crystal phase, interface phase and amorphism phase;(3) bases the result of the (2)step, process the ISO9080 ratings of the polyethylene pipe material: the mass per centum content of crystal phase is 50-90%for polyethylene pipe material with PE80 rank and more than it, the mass per centum content of interface phase is 5-45%, the mass per centum content of amorphism phase is 0-15%. Compared to pipe certification authority hydrostatic test rating, This method has advantages of convenient, fast, and saving money, accelerate the new pipe material products into research development process, and with high accuracy, wide adaptation.

The invention discloses an automobile display stand for conveniently multidimensional displaying automobile for auto shows. The automobile display stand comprises a base; a motor is connected to the position, close to the middle, of the outer wall of the top of the base through a bolt, a turntable is welded to an output shaft of the motor, a fixing plate which is cylindrical is welded to the outerwall of the top of the turntable, a first ring block is welded to the outer wall of the bottom of the turntable, a first groove is formed in the outer wall of the bottom of the first ring block, balls are in rolling connection with the inner wall of the first groove, a second ring block is in rolling connection with the outer walls of the bottoms of the balls, and a ring plate is welded to the outer wall of the bottom of the second ring block. The automobile display stand is good for customers to observe automobile structure from all sides and improves work efficiency; as the height of the automobile display stand ca be adjusted, customers can observe the chassis of the automobile more conveniently and can be drawn into the automobile better; as related information of products is displayed, customers can learn the automobile better. The automobile display stand has high practicability.

The invention discloses a welding pool microstructure evolution simulation method based on a cellular automaton method. The method comprises the following specific steps: simplifying the solid condition of a welding pool, then establishing a dendritic crystal nucleation and growth model, finally writing a computer program, inputting alloy thermophysical parameters and various welding process parameters, and calculating to obtain a simulation result. According to the invention, the change of a welding temperature field under a transient condition and the growth morphology and solute concentration distribution of dendrites in the solidification process of a molten pool can be simulated, thereby playing a guiding role in practical engineering application.

The invention relates to a teaching aid, particularly to an intelligent teaching aid used for operation system teaching, which is used for demonstrating operation system knowledge points, such as process scheduling, process synchronization, deadlock and the like. The intelligent teaching aid mainly comprises a turntable, a telescopic arm, a square table, a digital tube, a light emitting diode and a photoelectric sensor. The intelligent teaching aid combines the advantages of an embedded system and the creativity of a traditional vivid teaching aid, so that the model also combines the advantages of user self programming and visual presentation. The teaching aid has the advantages of simple and clear structure, visual demonstration and low cost, and is suitable for being popularized in teaching.

The invention provides a method and a device for controlling man-machine conversation based on fusion of a knowledge graph and a memory graph. A private memory graph is added on the basis of a common knowledge graph, so that memory serves as the private knowledge graph, the contents, such as basic information and personal preference, of a user can be stored, and the contents can also be verified and classified. The personal information of the user is memorized, and the privatized and customized private memory graph is serially connected with the common knowledge graph, so that the user is more deeply understood by the system; meanwhile, the personal information is greatly verified, so that the accuracy of memory is greatly improved, and the better service can be provided for the user.

The invention belongs to the field of industrial equipment digital twinning, particularly relates to an industrial equipment digital twinning construction and maintenance method and system based on data driving, and aims to solve the problem that the application range and efficiency cannot be both considered in the construction and maintenance process of a digital twinning body. The method comprises the following steps: learning industrial equipment labeling data through a data-driven deep learning network to construct a digital twinborn body, and carrying out multi-modal fusion; carrying out multi-modal fusion model training on data of different enterprises through federal learning; new sample space distribution is continuously learned through lifelong learning, and the multi-modal fusion model is updated online; and carrying out industrial equipment health management through the model. According to the method, a complex equipment health management scene in which mechanism modeling is difficult, data sharing is difficult and new fault types continuously occur in a long-term operation and maintenance process in a real industrial scene can be overcome, and the digital twinborn body is vivid, robust, robust and credible.

The invention relates to a method for rapidly detecting the grade of a polyethylene tube special-purposed material. The method comprises the steps that: (1) a sample is detected, such that a differential scanning calorimetric curve is obtained; (2) various melting peaks on the curve are divided into four groups according to a temperature no lower than 127 DEG C, a temperature of 127-120 DEG C, a temperature of 110-120 DEG C, and a temperature no higher than 110 DEG C; corresponding integral areas are calculated; weight percentages and corresponding crystallizable sequence lengths are calculated, wherein a long sequence comprises no less than 260 methylene groups, a relatively long sequence comprises 260-160 methylene groups, a non-long sequence comprises 160-90 methylene groups, and a short sequence comprises no more than 90 methylene groups; and according to the lengths of the crystallizable sequences, polyethylene tube material grading is carried out according to quality contents, wherein long sequence content is 30-86%, relatively long sequence content is 3-25%, non-long sequence content is 3-30%, and short sequence content is 0-50%. The method provided by the invention is convenient, fast, and fund-saving. With the method, tube material novel product research and development processes can be accelerated, and online detection can be carried out.

The invention relates to the field of mobile phone reading software, in particular to an intelligent comment system of mobile phone reading software. According to the technical scheme, the intelligentcomment system of the mobile phone reading software comprises a comment input module, a comment display module and a comment evaluation module, wherein the comment input module is used for selectingwords needed to be commented and triggering and opening an operation menu for performing commenting when one part of the words needs to be commented, receiving the input commented words through the operation menu for performing the commenting, and releasing the commented words with corresponding labels; the comment display module is used for displaying comments corresponding to a selected word area on one side of an article area; and the comment evaluation module is used for performing judgment on the displayed comments, wherein the judgment includes ''support'', ''neutrality'' and ''objection''. The intelligent comment system of the mobile phone reading software provided by the invention can improve the reading interactivity and display the comments on reading fields in real time, therebysolving the problem that existing mobile phone reading software cannot comment the reading fields or view the comments.

The invention discloses an electronic book construction method. The electronic book construction method comprises (1) establishing an MP4 (Mobile Pentium 4) object and establishing a simple relationship; (2) establishing an electronic book static catalog; (3) displaying an electronic book dynamic catalog; (4) providing an inference-based knowledge learning and search method; (5) establishing other search methods; (6) establishing other functions. According to the electronic book construction method, a compiled electronic book is clearer, establishment of the interior relationship between interior knowledge of an electronic book is facilitated, knowledge and ideas required to be expressed by a writer are accurately expressed, meanwhile a reader can easily and deeply understand knowledge contents of the electronic book through retrospect of the interior relationship between the knowledge, learning of static expression knowledge of a knowledge main frame tree can increase the knowledge logicality, the application of the logicality and the process knowledge has a large guiding function in applications of the knowledge contents of the electronic book.

The invention discloses a portable multifunctional geometric tolerance display box which is mainly used for displaying geometrical tolerance zones, and belongs to the teaching field. Two small flat plates driven by a pinion and rack mechanism are arranged on the inner wall of the left side face of the portable multifunctional geometric tolerance display box, a hole is formed in the right end of the top surface, and four small flat plates are embedded in the hole. A round hole is formed in the upper middle portion of the front face of the portable multifunctional geometric tolerance display box, a series of coaxial cylinders are fixed, an arch-shaped hole is formed in the upper right portion, and an arch-shaped combination is arranged in the arch-shaped hole. Three through grooves in the lower portion of the front face and guide grooves formed in the left face and the right face are used for restraining and fixing the four small flat plates. An inclined hole is formed in the rear face and used for containing and fixing a cylinder containing the movable cylinders. A round hole is formed in the left side face, and a gear shaft is arranged in the round hole. The portable multifunctional geometric tolerance display box has the advantages that teaching aids are brought in a classroom, twelve geometric tolerance projects are showed to students, and the portable multifunctional geometric tolerance display box assists teachers and students in completing teaching and learning of related knowledge. Theoretical knowledge is combined with physical display, and learned knowledge is understood more easily and more memorable. In addition, the portable multifunctional geometric tolerance display box is multiple in functions, simple in structure and convenient to carry.

The invention discloses a diving clock system which comprises a clock body unit, a hanging bracket unit, a pressure reduction unit, a main cable unit, a cable guide unit and an umbilical cord unit. The clock body unit is connected with the pressure reduction unit through a locking device, the hanging bracket unit is connected with the clock body unit, the hanging bracket unit is connected with a driving device, the driving device is used for driving the hanging bracket unit to rotate to separate the clock body unit from the pressure reduction unit, and the hanging bracket unit drives the clockbody unit to move underwater. The main cable unit, the cable guide unit and the umbilical cord unit are connected with the clock body unit. The main cable unit, the cable guide unit and the umbilicalcord unit dive into water along with the clock body unit. The main cable unit and the cable guide unit are used for pulling the clock body unit in the diving process, and the umbilical cord unit is used for supplying resources to the clock body unit and providing communication signals. The diving clock system is convenient to maintain, the three-dimensional space can be used to a greater extent,the product size is reduced to a greater extent, the operation efficiency is ensured, the time cost is saved, the product use frequency is improved, and the safety performance is reliable.

The invention discloses an unfolding and displaying method and apparatus of solid figures, an electronic device and a storage medium. The unfolding and displaying method of solid figures includes the steps: determining a solid figure to be unfolded, and acquiring the to-be-unfolded state of the solid figure; looking for the hinged relation group corresponding to the to-be-unfolded state in a preset multi-level information relation table; according to the hinged relation group and a preset unfolding rule base, determining the target unfolding rule of each target surface plane on the solid figure; and controlling the target surface plane to be unfolded in the set rate, based on the corresponding target unfolding rule, and displaying the unfolding process in real time. The unfolding and displaying method of solid figures can dynamically display an unfolding process of the solid figure for a learner so as to enable the learner to deeply understand the forming process from the solid figure to the selected unfolded state so as to preferably improve the user experience of the teaching demonstration function of the electronic device.

The invention relates to a virtual shopping system based on VR and belongs to the virtual shopping technology field. The virtual shopping system comprises an image input system, a data input system, an information storage system, an image processing system, a processing system, a data management system, an image display system, an AC system, a feedback system, VR display equipment and an input end. Data of articles is inputted to a system by a seller, through processing, the data is display in the virtual space of the image display system, the data is queried by a buyer through wearing the VR display equipment, the stereo virtual articles can be seen in the virtual space, and communication with the seller can be directly carried out. The virtual shopping system is advantaged in that in combination with stereo perception of articles in entity shops and convenience and rapidness of online shopping, the buyer is facilitated to better understand products during shopping.

The invention discloses a hydrostatic pressure distribution teaching demonstration instrument and belongs to the technical field of teaching of hydrostatics. A laser measuring device is used for observing liquid level difference of a free fluid surface of liquid in an experiment cylinder between a rotation center and the inner side wall of the cylinder; an Euler equilibrium differential equation is used for calculating to obtain a theoretical rotation speed of a rotating container; the theoretical rotation speed of the rotating container is compared with an actual rotation speed displayed by aspeed regulator screen of a digital display speed regulating motor so as to verify the Euler equilibrium differential equation; the rotation speed of the speed regulating motor is preset by adjustingthe digital display speed regulating motor; the Euler equilibrium differential equation is used for solving theoretical liquid level difference of the free liquid surface of the liquid in the experiment cylinder between the rotation center and the inner side wall of the cylinder; actual liquid level difference obtained by measuring is compared to verify the Euler equilibrium differential equation. The hydrostatic pressure distribution teaching demonstration instrument is capable of carrying out synchronous teaching of verification and experimental application of the Euler equilibrium differential equation and enabling students to have deeper understanding of learning content of equilibrium state of the liquid in the constant-angular-speed rotating container.

The invention is to control a usual function and a sending function properly when sending a photographed image to an external apparatus. A photographing apparatus (1) includes a first processing unit (51), a second processing unit (52), and a third processing unit (53). The first processing unit (51) executes a function other than sending from the photographing apparatus (1) to the external apparatus. The second processing unit (52) executes a function relating to sending from the photographing apparatus (1) to the external apparatus. The third processing unit (53) controls to allow exclusive execution of a function other than the sending by the first processing unit (51) and execution of a function relating to the sending by the second processing unit (52) in order to prevent the flaw from being caused by performing execution of a function other than the sending by the first processing unit (51) and execution of a function relating to the sending by the second processing unit (52) in parallel.