1065results about How to "Simulate the real" patented technology

A system for planning a spine surgery, comprising a haptic interface capable of providing force feedback to the user and a computer adapted to simulate a surgical procedure by responding to inputs from the haptic interface and outputting haptic feedback to the haptic interface is provided.The system further comprising a rapid prototyping unit including a unit that is adapted to create models of the anatomical region where the surgical procedure will be performed in its current unoperated condition and in the predicted postoperative condition. Further the rapid prototyping unit is adapted to create a three dimensional guide to be used in the surgical procedure as well as suggest revisions to the surgical procedure. The system further comprises a computer that simulates loading of the spine and planned implanted hardware using finite element software.

An interface device and method for interfacing instruments to a medical procedure simulation system serve to interface peripherals in the form of mock medical instruments to the medical procedure simulation system computer to enable simulation of medical procedures. The interface device includes a housing having a mock bodily region of interest to facilitate insertion of a mock instrument, such as an endoscope tube, into the interface device. The mock bodily region of interest may be pivotable to simulate various patient orientations. The instrument is engaged by a capture mechanism in order to measure rotational and translational motion of the instrument. An actuator is disposed within the interface device to provide force feedback to the instrument. The measured motion is provided to the computer system to reflect instrument motion on the display during the simulation. Alternatively, the interface device may be configured to accommodate instrument assemblies having a plurality of nested instruments (e.g., sheath, catheter and wire), whereby the interface device individually grasps, measures manipulation of and provides force feedback to the nested instruments. In addition, the interface device may be configured to simultaneously accommodate a plurality of independently inserted instruments.

A virtual coatings application system has several features to enhance the realism of simulated spray painting. The system generally includes a display screen on which is defined a virtual surface (such as a truck door) that is intended to be virtually painted or coated by the user. Alternatively, the system includes a head-mounted display unit that displays a virtual spray painting environment in which the virtual surface is defined. The user operates an instrumented spray gun controller that outputs one or more signals representing data as to the status of the controls on the spray gun controller. The system also has a motion tracking system that tracks the position and orientation of the spray gun controller with respect to the virtual surface. Simulation software generates virtual spray pattern data in response to at least the data from the spray gun controller and the position and orientation data received from the tracking system. Virtual spray pattern images are displayed in real time on the virtual surface in accordance with the accumulation of virtual spray pattern data at each location on the virtual surface.

Systems and methods are provided for visually realistic simulation and real-time rendering of natural atmospheric lighting and related phenomena in an outdoor scene represented by an image provided by a simulation environment. The systems and methods of the present invention provide techniques to approximate the visual effects of natural atmospheric lighting and related phenomena that are visually realistic and that can be computed in real-time to render frames of a scene at real-time frame rates per second. The techniques consider the light scattering effects due to sunlight and ambient light in relation to objects, atmospheric particles and other scene elements represented by the image.

The invention relates to a device (1) and a method for simulating a welding process. The device comprises a computer (2) having an input device (11) and an output device (6), a welding torch (3), a magnetic position monitoring device (5) having at least one transmitter (13) and a plurality of sensors (14), a retaining device (15) for a workpiece (4) used for the simulation and a visualization device (16) for generating a two- or three-dimensional image (29) on the output device (6). The retaining device (15) has a recess (18) into which the workpiece (4) can be inserted, at least one transmitter (13) of the position monitoring device (5) being arranged below the recess (18) at as small a distance from the workpiece (4) as possible, and the retaining device (15) being designed as a small, portable box (19) to be placed on a table (10).

The invention relates to a coal-gas outburst simulation platform for processing coal-gas outburst simulation researches under different coal bed inclinations, different ground stresses and different gas pressures, and researching the transmission rule and attenuation character of acoustic emission signal in the outburst process. The invention uses a plurality of hydraulic jacks to axially jack coal sample, uses an aeration port to charge gas into the coal sample, and can simulate the protruded stress concentrated zone caused by underground coal face, to simulate the outburst condition of coal and gas. The protruded port of the device via a quick release device can realize mechanical automatic control, to quickly open the protruded port to instantly release pressure at the protruded end and eliminate the effect on the protruding energy by manually opening the protruded port, to simulate on-site protrusion actually.

The invention discloses a coal and gas outburst simulation test device, which comprises a steel cylinder, flange disks arranged at two ends of the steel cylinder, an inflation system and a data acquisition system. The flange disk which is arranged at one end of the steel cylinder is a flange disk provided with a central hole, and an explosion-proof plate is arranged on a non-mounting side of the flange disk and the steel cylinder. The invention also relates to a protection device for the coal and gas outburst simulation test device, which mainly comprises a bearing flanged pipe fitting, a pressure relief cavity, an anti-overload safety valve, an air release valve and a shock-proof pressure gauge. One end of the bearing flanged pipe fitting is connected with the coal and gas outburst simulation test device, and the other end of the bearing flanged pipe fitting is connected with the pressure relief cavity through a flange disk; and the tail end of the pressure relief cavity is provided with a flange cover. The protection device can be applied to real-time measurement and safe pressure relief in the test process.

The invention relates to a well cementation cement sheath performance simulation experiment device and an experiment method. The experiment device comprises one set of cement cake circulation device, one set of cement sheath performance detection device and one set of cementing face shearing force experiment device. The experiment method comprises the following steps of: simulating the manufacture process of a well cementation test sample under the practical underground warm-pressing condition; detecting the sealing performance and the corrosion resistance of the cement ring; detecting the sealing performance and the corrosion performance of the cement ring; and detecting cementing face shearing force between a casing pipe test sample and the cement sheath and cementing face shearing force between the cement sheath and a stratum test sample. According to the invention, because the adopted casing pipe test sample has the same size and the material with the casing pipe material applied in the practical well cementation, the adopted stratum test sample is a standard artificial stratum test sample, the porosity-permeability characteristic, the strength characteristic, and the fluid characteristic and the like of the adopted stratum test sample are same with the stratum characteristic in the practical well, the invention can be used for truly simulating the dynamic variation of full-size well cementation, and the simulation condition is accurate. The invention can be widely applied in simulation experiments of various well-cementation dynamic variations.

A training system using haptically enhanced simulations of dental procedures to provide the sensorimotor involvement needed for dental training. To provide touch feedback in combination with a realistic visual experience, the system integrates a haptic stylus interface for simulating the movement and feel of the tool-tip with a three-dimensional, stereoscopic display. The haptic stylus enables the dental student to orient and operate simulated dental tools. Working on a virtual model viewed in a stereo display, dental students can use a simulated pick to probe a tooth, or a simulated drill to prepare a tooth for cavity repair. The touch feedback is simulated by representing these dental instruments as force-to-a-point tools which map to haptic simulation procedures executed on a computer workstation that also provides the visual display.

The invention provides a comprehensive testing system for a shield tunnel structural model, which comprises a soil horizon simulating and soil pressure loading device and a tunnel structural model; the soil horizon simulating and soil pressure loading device is a simulated soil body cavity enclosed by steel plates; a horizontal reaction frame is arranged outside the soil body cavity; a horizontal soil pressure jack is connected between each edge of the reaction frame and the soil body cavity; the tunnel structural model is attached with a uniform water pressure loading device and a non-uniform water pressure loading device, and is axially and vertically arranged in the center of the soil body cavity; simulation testing soil is filled between the tunnel structural model and the soil body cavity; the upper part of the soil body cavity is covered by a steel cover board; a vertical reaction portal frame is arranged above the soil body cavity; and a vertical soil pressure jack is connected between the lower part of a girder of the vertical reaction portal frame and the steel cover board. The system can simulate interactions between tunnel structures in different forms of fractures with the stratum under different stratigraphic and hydrologic conditions, and more truly simulate the environment conditions of the tunnel structures with more accurate and reliable test data, thereby providing more reliable safeguard for shield tunnel constructions.

An online virtual reality ecommerce system imposes needs upon its avatars, thereby enhancing the simulation of reality, and providing need-based motivations for ecommerce in addition to enjoyment-based motivations. The virtual needs also cause avatars to be perceived as independent beings which can independently enjoy, desire, and suffer based on experiences and purchases within the virtual world. This causes users to emotionally bond with their avatars, and to feel compassion, empathy, and even friendship toward them. Users feel increased desires to spend time online with their avatars, and to purchase goods for their avatars as well as for themselves. Avatars can be fantasy avatars in a virtual fantasy world, and their needs can include special, fantasy items. Basic needs can include food, clothing, shelter, exercise, bathing, shaving, medicine, and haircuts. Entertainment can be needed to avoid boredom, and specific tools, equipment, fuel, and / or transportation can be needed for various activities.

An activity board assembly (1) including; a board (2) having an upper surface (3) for supporting a user (46), a base portion (4) and a resilient support member (5) having an upper and a lower distal end, said upper end being connected to an underside of the board and the lower distal end being connected to the base portion (4), characterised in that the board (2) is rotatable with respect to the base portion (4) about; a first axis in a plane substantially orthogonal with the upper surface (3) of the board and / or the base portion (4); a second axis substantially orthogonal to the first axis and substantially parallel to the upper surface (3) of the board and / or the base portion (4); a third axis orthogonal to both the first and second axis; the connection between the resilient support member (5) and the base portion (4) being configured to prevent linear movement with respect to each other.

The invention discloses a wind sand environment and engineering wind tunnel simulation device, in particular to a large opening direct-flow air blowing typed wind sand environment and engineering wind tunnel simulation device which is specially used for simulating wind sand movement and sand control engineering; the wind sand environment and engineering wind tunnel simulation device comprises a tunnel body which comprises an air inlet section (3), a transition section (4), a damp part with a damper (5), a first diffuser (6), a stabilization section (7), a contraction section (8), a speed vehicle (9), a testing section (10) and a second diffuser (11) which are sequentially connected one after another; and the power system is connected with the air inlet section (3) and is used for providing the power for the wind tunnel by a DC motor. The wind sand environment and engineering wind tunnel simulation device can truly simulate the wind sand control, thus pushing the wind sand control technique to go ahead; furthermore, the wind sand environment and engineering wind tunnel simulation device can carry out the test for preventing the diffusion of contamination and the test for the building dynamics characteristic and the like.

A hybrid test bed mixes simulated and actual wireless communication network entities in a real-time packet data simulation. In at least one embodiment, the test bed supports end-to-end simulation for a packet data application running on a mobile station simulator. The test bed provides a realistic assessment of that application's real-time performance by constraining packet data transmissions from a radio base station simulator to the mobile station simulator according to peak data throughput estimates and mobility event processing determined from a detailed wireless communication network simulation. Additionally, the test bed includes or is associated with a graphical display system providing real-time performance information.

The invention relates to a phantom for simulating the ultrasound guided insertion of a needle in a blood vessel of a human body site. The phantom comprises: a skin mimicking layer (2), formed in a first material; —a tissue mimicking layer (3), formed in a second material and at least one artificial blood vessel (4a, 4b, 4c), formed in a third material, the first, second and third material being arranged to reproduce both the mechanical and the ultrasound properties of the corresponding parts of the human body site. Thanks to the invention, the phantom permits a realistic simulation of a human body site behavior.

A general purpose simulator providing a high fidelity simulation performs the simulation at level 2, the data link layer of the protocol stack level where each individual client has a unique client address. The unique client address emulated by the simulator is inserted into a data frame at the data link layer of a protocol stack before the data frame is transmitted on the communications channel. Simulation at level 3 is also performed by inserting level 3 network identifier to emulated remote multiple clients. The simulator of the present invention may be run at a workstation residing connected to a server servicing the simulated client requests. The simulator also may be run on a host computer connected to a server via a communications device. Additionally, the simulator may also be run on the same system as the server.

The invention discloses a test device of a model for manufacturing rock masses containing interlayers and a test method thereof. The test device of the model for manufacturing the rock masses containing interlayers comprises a semicircular angle device, an upper baffle, a lower baffle, a left side plate, a right side plate, a circular turntable, a core-drilling machine drill bit, a flat plate, a flat plate angle control rod, a fixed screw rod, a base plate, an interlayer model test piece, a U-shaped plate and a guide slot. The test method comprises the following test steps: arranging the rock masses according to an outline central line and fixing the rock masses; manufacturing interlayer materials and casting the model, fastening the test piece, drilling the core, replacing the core-drilling machine drill bit, changing the position of the test piece to drill repeatedly and cutting to obtain the test pieces with different height-diameter ratios or obtain the test pieces with different interlayer inclination angles; then carrying out mechanical test. The test device is simple in structure and suitable for manufacturing the test pieces with different interlayer thicknesses, inclination angles and height-diameter ratios; according to a core-drilling and cutting machining device, by making full use of the existing device, the influence on the mechanical properties of the test pieces caused by different conditions can be analyzed, coring of irregular rock samples taken in the site can be carried out directly, so that the test efficiency is improved and the test time is shortened.

The invention is a light flight simulator, belonging to a simulator to simulate air flight, comprising 6-freedom moving platform, movement controller, pattern processing computer, helmet, master control force feedback unit, sound synthesis and reproducing device, computer for processing models and kernel calculation, driving handle, pedals, switches and handgrips, where the 6-freedom moving platform comprises main beam, truss structure, driving handle, pedal, screw, motor, and chassis, as well as switches, handgrips and other parts equipped on cabin. And the invention implements 6-freedom full dynamic simulation, effectively reduces structural height, and has features of small volume, lightweight, simulation reality and low price.

The invention relates to a human body gastrointestinal tract bionic system and a simulation experiment method based on the system. The system comprises a system controller, an intestinal flora planting system, a simulation digestion system, a simulation absorption system, a stirring system, a rate control system, a gas path system, a temperature adjusting system, a pH adjusting system, a digestion liquid reagent bottle, an absorbing liquid reagent bottle and a collector. The method comprises the following steps: setting parameters of the control system, preparing planting colloidal particles, planting the intestinal flora, simulating digestion and the like. The system simulates gastrointestinal tract digestion, absorption and intestinal microecology of human bodies under in-vitro conditions, is real in simulation and good in reproducibility, and us applicable to study on the fields of nutriology, toxicology, physiology, microbiology and the like as intelligent control is adopted.

The invention relates to testing apparatus, in particular to a test simulator for displacement and extraction of natural gas hydrates through CO2. The testing apparatus comprises a reaction kettle, a constant temperature control system, a gas injection and liquid injection system, a liquid loop heating system, a return pressure control system, a vacuumization and gas-liquid separation system, a gas generation online detection system and a data acquisition system. Real-time monitoring of saturation of the hydrates is achieved by the adoption of the time domain reflection technique, the testing apparatus is easy and convenient to use and small in calculated quantity, and data supports are provided for accurate discussion of the replacement reaction rate; the gas generation pipeline of the reaction kettle is connected with a gas chromatograph, so real-time measurement of gas generation components can be achieved; the simulation environment is more approximate to the undersea extraction environment.

A floating decoy system is provided for agitating the surface of a water body on which the device is deployed in a manner that is attractive to live game animals (e.g. live waterfowl). The system includes a frame, which is disposed partially above and partially below the surface of the water and suspended from a plurality of floating means. The device also includes an agitator assembly, which is slidably mounted to the frame above the surface of the water and produces ripples on the water surface and the sound of splashing water. The ripples and sound of splashing water are intended to simulate an active area where wild game are swimming, feeding, and interacting. Additionally, an airborne decoy may be mounted atop the frame to give the device added attractiveness to wild game. An alternative embodiment requires the removal of floating means and the anchoring of the frame to the bottom of the water body. The invention further includes a method for attracting live game animals to a target area by agitating the surface of a water body in a manner that simulates the appearance and sound of swimming, feeding, bathing, and commingling live game.

The invention discloses a scheme of a spacecraft navigation based on an X pulsar detection equivalent device. The scheme mainly comprises the following processes of simulating X pulsar emitting photon information detected by an X pulsar detector, and resolving a spacecraft position and speed navigation information. The overall simulation process is divided into three parts, namely detector simulating, data processing and navigation resolving. In the first part, the detector simulates the photon arrival time; in the second part, a data processing system performs cycle folding according to the photon arrival time of the X pulsar, calculates a pulse profile, performs time conversion, and performs pulse profile cross-correlation processing with a standard profile stored by a known ephemeris so as to finish the calculation of the pulse arrival time; and in the third part of navigation resolving, a precise spacecraft orbit and time information are resolved finally by taking the pulse arrival time as measurement information and combining an orbit dynamic equation and kalman filtering. By the X pulsar equivalent device, the influence of various parameters and different algorithms such as a resolution ratio, a view field, time conversion precision, a folding algorithm and the like on the autonomous navigation accuracy of the spacecraft can be analyzed, and necessary technical support is provided for the development of an X pulsar-based autonomous navigation system and the research on combined navigation with other systems.