49results about How to "Increase the degree of realism" patented technology

The invention relates to a testing device and a testing method of a lane departure warning system. The testing device is characterized by comprising image sensors, an image acquisition unit, a vehicle-mounted CAN (Controller Area Network) unit and a data processing unit, wherein the image sensors are fixed at both sides above a vehicle and used for acquiring images of the road surface, wherein the plane that the image sensors are located are parallel to the road surface; the image acquisition unit is used for converting the road surface image information acquired by the image sensors into digital information; the vehicle-mounted CAN unit provides vehicle speed information in original vehicle information and warning time information provided by the lane departure warning system to be tested; and the data processing unit is used for working out the distance from one point on the vehicle body to the lane line and the off-line speed at the warning time under a world coordinate system according to the lane-line containing road surface information acquired by the image acquisition unit by combining the vehicle speed and the warning time information provided by the vehicle-mounted CAN unit. The invention has low cost and high authenticity degree of a tested evaluating result and is suitable for testing various lane departure warning systems.

The invention discloses an ephemeris model-based method for analyzing the shade of an earth-moon L2 point Halo orbit, and belongs to the technical field of aerospace. The method comprises the steps of building a kinetic equation under a restricted three-body model formed by the earth, the moon and the planet and generating the Halo orbit near an L2 point under an earth-moon rotation system; selecting on-orbit time th and a corresponding task moment T within a Halo orbit period and converting the Halo orbit under a rotary coordinate system into an inertia system; judging the shielding conditions of the earth and the planet on the satellite by using a conical shadow model according to the sun-earth-planet relative position and the sun-moon-planet relative position under an inertia coordinate system; changing the task moment T, and calculating the sun-earth-planet relative position and the sun-moon-planet relative position, carrying out shadow analysis by using the conical shadow model again until the orbit is completed; and changing the on-orbit time th of the Halo orbit, repeating the analysis, and calculating the shadow distribution conditions at different positions. The real degree is high, and the shadow analysis consideration is more comprehensive.

The invention discloses an artificial travertine hole mold and a cement-based non-burning artificial travertine preparation method. The cement-based non-burning artificial travertine preparation method comprises the following steps: (1) using the mold to form solid phase change materials in different shapes with a phase change material as an injection molding material; (2) arranging the solid phase change materials on the bottom surface of the mold; (3) adding a cementing material and an aggregate into a mixing device for uniform mixing, then adding an admixture, a water reducing agent and water into the mixing device for uniform mixing, adding the mixed materials into the mold evenly for forming and curing, demolding after the materials are completely solidified and conducting surface finishing polishing on the side with the solid phase change materials; (4) placing a finished product in a constant temperature device, taking the product out after the phase change materials are turnedinto the liquid state and flow out completely at a specific temperature, and cooling to the room temperature; (5) spraying an acid solution to the side of the artificial travertine with holes and cleaning with water after standing to obtain the cement-based non-burning artificial travertine.

The invention discloses exercise training equipment. The equipment is characterized by being provided with an equipment base, a running belt which can conduct circulatory transmission so that a trainee can be driven to run or walk passively and a running belt driving device which drives the running belt to conduct circulatory transmission are arranged at the outer side of the equipment base, the driving device is arranged in the equipment base, vertical first barriers which can be transmitted circularly along with the transmission of the running belt are arranged on the running belt, and when using the exercise training equipment for taking exercises, the trainee runs or walks along with transmission of the running belt and avoids the barriers on the running belt. According to the exercise training equipment, the equipment base and the running belt are arranged according to the principle of a running machine, the barriers are further arranged on the running belt, the periphery of the running belt is provided with encircling net and a football shooting opening and a basketball shooting opening which are used for football shooting and basketball shooting, thereby the barriers are utilized for simulating blocking of opponents, it is convenient for athletes to conduct avoiding at any moment according to the situation and shoot a football or a basketball flexibly, the genuine degree of the exercise training equipment is high, and it is more helpful to improve the training effect. The exercise training equipment is novel in structure and can be used for basketball training and football training at the same time, great practicability is achieved, and the equipment is worthy of being popularized extensively.

The invention discloses a method for constructing a cutting geometric model based on Solidworks in the field of tooth cutting machining. The effects of improving the precision of the gear and the tooth form and realizing high simulation are achieved. The technical scheme of the invention comprises the following steps of adopting a simulation system for creating a workpiece geometric entity; constructing a cutting edge model of a serrated knife; constructing an edge scanning model formed by cutting edges on teeth of a tooth cutting knife relative to a workpiece under a workpiece coordinate system; and then, combining the workpiece blank with a blade scanning surface, Boolean operation between the blade scanning surface and an instantaneous tooth groove geometric entity forms undeformed chips and new instantaneous tooth grooves, and after simulation is finished, outputting an undeformed three-dimensional chip geometric model removed in the cutting process of a certain cutter tooth of thetooth cutting cutter.

A method for comprehensive training of electric locomotive overhaul based on analog simulation is characterized in that through analog simulation, a simulated locomotive fault detection system and a locomotive overhaul teaching and training system for an electric locomotive are established, and the simulated locomotive fault detection system and the locomotive overhaul teaching and training systemare used to carry out analog simulation teaching and comprehensive training of electric locomotive overhaul on trainees. The establishment of the simulated locomotive fault detection system for the electric locomotive is to reproduce a fault through analog simulation in a simulated locomotive according to the fault characteristics of the electric locomotive, and display the simulated fault through splitting, so as to facilitate fault handling training indoors.

The invention discloses a distributed line loss determination and power grid monitoring equipment and method. The equipment comprises a main server, at least one second-level server connected with the main server and at least one third-level server connected with the second-level server, wherein the third-level server is at least connected with an external user terminal, the third-level server comprises an acquisition chip, a third-level metering module, a third-level memory, a third-level processing module and a third-level communication module, the second-level server comprises a second-level metering module, a second-level processing module, a second-level communication module and a second-level memory, and the main server comprises a communication module, a metering module, an analysis module, a monitoring module and a main memory. Data of the power grid can be conveniently acquired through three-level design, a line loss value can be acquired through calculation on the basis of the acquired data, the data is accurate, calculation is rapid, an abnormal data area can be found out through comparing an actual line loss value and a theoretical line loss value, an overhaul and maintenance instruction can be timely emitted, and power grid operation stability is improved.

The invention belongs to the technical field of education, and especially relates to a spacecraft lifting exercise device used for teenager aviation knowledge development learning. In view of the problem that the existing models cannot perform lifting drilling motion, and the interest of learning is not strong, the following scheme is proposed, the device includes a base, one side of the top of the base is connected with a launcher model by bolts, the other side of the top of the base is connected with a spacecraft model launching seat by the bolts, one side of the top of the model launching seat is connected with a lifting flight simulation track by the bolts, and one side of the lifting flight simulation track is provided with a propeller model. The device has a simple structure and lowcost, the adolescents can assembly the models and then perform the drills in the learning process of expanding the aviation knowledge, the fun of aviation knowledge development learning is increased,the students' hands-on ability can be cultivated, and the device has good educational and entertaining effects.

The invention discloses a wave-absorbing device with a high temperature-low temperature simulation capability, mainly including a wave-absorbing wedge, a wedge installation substrate, an electric heater unit, a sealing plate, a liquid nitrogen outlet pipeline, a sealing nut, a liquid nitrogen inlet pipeline and a metal sealing ring. The front surface of the installation substrate is provided with wedges distributed in an array mode. The back surface of the installation substrate is provided with a liquid nitrogen channel, the outer side of the channel is provided with a groove of a diameter as same as that of a heating rod, the electric heater unit is embedded in the groove, the sealing plate is welded on the outer side of the channel of the back surface, and the channel forms a closed space. The liquid nitrogen outlet pipeline and the liquid nitrogen inlet pipeline are installed at two ends of the liquid nitrogen channel, so that the liquid nitrogen flows from the liquid nitrogen inlet pipeline through the channel and out of the liquid nitrogen outlet pipeline. The invention can obviously improve the authenticity of the external heat flow simulation of the antenna during the vacuum thermal test, improve the effectiveness of the thermal test verification and provide the hot and cold simulation environment.

The invention relates to a braking unit for comprehensive training and teaching of a railway locomotive and a vehicle braking machine. The simulated braking unit includes a simulated braking disc placed on a support base, and a simulated braking machine executing device is arranged beside the simulated braking disc according to the positions of the railway locomotive and vehicle braking machine; various testing motions of the braking machine are realized through the simulated braking motions of the simulated braking machine executing device and simulated braking disc in order to achieve the purpose of comprehensive teaching and training of the railway locomotive and vehicle braking machine. According to the braking unit, different kinds of braking operation of the braking machine are reproduced through the simulated braking unit in a simulation mode, so that a visual effect is achieved on teaching, and students can easily understand and obtain a real feeling of on-site actual operation. By simulating training operation, operation of each braking work condition of the braking machine and comprehensive training and teaching of self-examination tests can be completed.

The invention discloses a method for simulating real environment after floor in a room is changed. The method comprises: (1) realizing preliminary establishing of a three-dimensional model in a room;(2) through an illumination intensity detection apparatus, detecting illumination intensity F1, F2, and F3 of positions of a window, a door, and a three-dimensional space tracking positioner, throughthe F1, F2, and F3, calculating a function relation corresponding to illumination intensity and distances; inputting the function relation into a three-dimensional model establishing system, to obtaina light intensity arrangement method; illumination intensity of a certain spatial point being sum of illumination intensity of light on the position and illumination intensity of natural light of a window position on the position; (3) obtaining a floor picture and specifications and a corresponding region segmentation method; (4) when a floor which needs showing is selected, using the region segmentation method corresponding to the floor specification, and filling the floor picture on a plane where the floor is in. The method can preferably realize real simulation of indoor illumination angles and intensity.

The invention relates to the technical field of electronics, and provides a flame lamp control circuit, a flame lamp control method and a flame lamp, the flame lamp control circuit comprises a controlunit, a control signal output unit, X first light source arrays and Y second light source arrays, a power supply signal pair is output through the control unit according to a preset control strategy,so that the first light source array and the second light source array are powered on alternately; the control signal output unit is used for outputting a first control signal and a second control signal according to the power supply signal pair; the first light source array and the second light source array are powered on alternately, so that the on-off mode of each LED element in the M LED elements in the first light source array is controlled by using the first control signal, and the on-off mode of each LED element in the N LED elements in the second light source array is controlled by using the second control signal, so that the flickering mode of the flame lamp is enriched, and the true degree of flame flickering simulation is improved.

The invention discloses a visual dynamic honeynet custom topology deployment method, which reduces the complexity of constructing a honeynet, improves the construction efficiency, is convenient to maintain, and solves the problems that single honeypots of a current honeynet system are deployed one by one, the selection type of honeypot templates is single, And honeypot service application and vulnerability utilization are simply combined. And moreover, through visualizing the honeynet topology, the complex honeynet topology is more intuitive, the security personnel are helped to grasp the overall honeynet monitoring condition in real time globally, and the troubles that the analysis view of the current honeynet system is limited, and many attack data events are difficult to analyze are reduced. Besides, through the dynamic honeynet topology, the original honeynet topology structure can be dynamically changed, more complex and diversified attack honeynet utilization environments are realized, and the true degree of the honeynet is improved.