The products plan below virtual reality environment and production technology

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The research current situation of technology of the concern that the article discussed fictitious production technology and virtual reality technique, virtual reality and products plan and production application fall in virtual reality environment, developed what environment of a virtual reality falls to stop garage parameter to design a system. Foreword is fictitious production technology is to use computer technology to want to produce and make an activity what undertake undertake comprehensive building to place model and emulate, the design that includes a product, treatment, assemble, content shedding, resource plans and allocate, organization and management. The appearance that gives a product with respect to imitate of real time ground in the design phase of the product and working state, production process, producibility that inspects a product and design rationality, forecast its to make cycle and performance characteristics, so that modify a design in time, organize production effectively neatly, shorten product development is periodic, achieve first-rate product quality and beneficial result. The function that presses fictitious production technology can divide for: The knead dough of fictitious production technology that faces a product organizes fictitious production technology of management to manufacturing process. The design of former overweight product, make, use, examine reach an opinion build model and emulate, the plan that latter emphasizes at producing a course, organization management, resource attempers, content shedding, iformation flow build model and emulate. Virtual reality technology is to use computer technology to build a kind of distinct fictitious environment, in this environment, the feeling that wait seems the vision of people, hearing and touch like be in real environment, have namely " be personally on the scene " feeling, people can be enmeshed in this environment to have real time with the environment alternant. This is it is alleged " be enmeshed quality " , " real time sex " and " active alternant sex " . In this environment, the design, product that make and uses, not be objective, do not use up real data, also do not need the facility such as the machine tool, he is sound of harmony of a kind of image only is alleged " digital product " just. Use product of this kind of number, the outward appearance that we can have a product is examined and revise, the motion that assembles imitate and interference examination, machine is emulated, the treatment imitate of the spare parts, and even the imitate of character of service of the product and evaluation, the feasibility that so that be in,the flaw that the upriver design phase of the lifecycle of the product can eliminate a design, evaluation machines and rationality, forecast the cost of the product and performance characteristics, offer modification measure and means. Virtual reality technology is carried out for us collateral project, nimble make, reduce error and do poorly done work over again, shorten development cycle and raised product quality to provide environment of a first-rate. Visible, virtual reality technology and the relationship of the fictitious production technology that faces a product are most close. 80 time just just offer virtual reality technology, as the rapid development of computer technology, be what get people in 90 time is great take seriously and obtain enter practical phase very rapid development, quickly, the success application that wins above all in side of military affairs, entertainment especially is hearten making a person. Present circumstance is, on one hand, its the development change quickly of technology of soft, hardware; On the other hand, its the price whacking of soft, hardware is tall, and what the price drops is fast very breathtaking also, return some technologies to still be in primary level, not can satisfactory, software function also cannot satisfy need. On the foundation of existing condition and technology, how to produce the effect of virtual reality technology adequately, the manufacturing industry that is us makes beneficial contribution, it is our responsibility. 1, the asks basically to get information from the mankind way of virtual reality technology looks, the vision is the mainest, 70% of the information content that it occupies people to get, it is hearing, touch and taste next. To achieve clear result, satisfy the person's vision and aural habit, the image of fictitious environment and noise should be three-dimensional and stereo; To achieve real time sex, image at least due the frame frequency of 60 120Hz, answer people at any time even operate signal, defer cannot exceed 0.

1 second. Accordingly, the demand that virtual reality technology handles speed and monitor to the computation of the computer is very high, the system of most system and high quality is developed on workstation, want to deploy high figure to quicken card. But these two years, personal computer function rises substantially, had come true on personal computer relatively the virtual reality technology of high quality. Cost is reduced and of personal computer popularize a gender, the application that promotes this technology greatly and development. People achieves position of the appearance of outside object, space and rate through the vision, the stereo deepness cue that should know outstanding static state, trends and physiology will get. Static deepness clew basically is relation of the position of the object inside the space, keep out, size and definition, this three-dimensional formative in us had considered to go in in umbriferous relation. The moving that the object carries movables is born feels and the position changes, must be calculated in real time with respect to requirement computer and process image, the visual of short duration that exceeds a person only takes time, general not less than 30 frame / second, ability acquires the image of flowing stability, and won't appear twinkle. Place of our current general and three-dimensional animation asks and this should be achieved. But 2 dimension show such three-dimensional graph and animation on screen, see an object with an eye just like us, lack the deepness feeling of the object and stereo sense. Practice makes clear, the action that the deepness to the object decides pair of eye parallax of the person since feeling. The object that should achieve nature is stereo the effect, must use " two eyes " see an object. In the computer the image in fictitious environment, the image of two eyes the person is calculated apart and must handle, corresponding ground asks the picture that has departure shows. At present commonly used is helmet type monitor, but the price of helmet type monitor of higher resolution exceeds $50000. In the desktop in fictitious environment, be show on common monitor double image or alternate displays are binocular image, glasses of repass light valve departs twice the picture that see. Accordingly, use binocular when image alternate displays, the frame frequency of monitor must be common the double above of indication means. Consider the delay of light valve glasses again, frame frequency not less than 80Hz just do not appear twinkle phenomenon. Binocular and apart image must be calculated in real time with respect to requirement computer and handle 80 frame / the image of second above. Requirement of sex of this real time is very tall, reason uses workstation to serve as lead plane more. In the game software on personal computer, the method previously is to use very low resolution and 2 dimension image. As personal computer speed rise, can use three-dimensional image at present, but resolution still very low. Use high-grade graph to quicken card, can accelerate computational rate greatly, can reach resolution of 32bit color, 1600*1200, 4M Triangles/s and 100M Pixel/s grain, had made the virtual reality technology on personal computer platform entered practical phase. On production technology, be opposite commonly the requirement of noise is inferior. And defy in real time in the military affairs in the virtual reality system such as training, dimensional stereo effect is must. In the desktop in fictitious environment, interactive manipulator basically is common mouse, 6 freedom spend glove of mouse, data, joy stick. Data is taken, act of large and umbriferous ball use in more perfect virtual reality system. The soft hardware price of virtual reality system is taller. For this, according to different utility and need, can deploy different system, be enmeshed appropriately the fictitious environment of deepness just won't make a system too complex reach cost, maintenance burden is overweight. For example, with the system that designs at car appearance modelling, the key is showing the block diagram of high quality is resembled, and the demand of hearing and touch is very low, undertake operating with common mouse can, real time sex also asks not tall. Be like again, the spare parts assembles imitate in, besides image, but maneuverability demand is higher, can deploy 6 freedom to spend mouse and data glove to wait. In the virtual reality system such as training of simulation of car, plane, the eye shot that asks to have expanse, real time control system, distinct sound effect. Want what answer people quickly to operate not only signal, the emulation that the touch that realizes people to wait to force, displacement even feedbacks. 2, the system of applied virtual reality of virtual reality system is in above all the high-tech domain such as military affairs, spaceflight and recreation and roam the application that waits for a respect to score a success. For example: The cockpit system that is used at training of astronaut, pilot, battlefield system of real time drilling (fictitious battlefield) wait. Virtual reality system has fundamental application likewise in products plan, production process, can raise the technical level of the product greatly, for example: Of design of the design of 777 planes of Boeing company, Ford car appearance and collision experiment, factory and building roam etc. At present applied effect had better be below a few respects: (The appearance of 1) product designs for example: Car appearance modelling designs a be a car very important facet, use expanded plastics to make appearance model more before, want to evaluate and be revised what pass for many times, take a lot of work take time. And the appearance design that uses virtual reality to build a model, can revise at any time, evaluation, the number building a model after plan is definite presses a mould according to can using Yu Chong directly design, emulate and machine, use at advertisement and conduct propaganda even. In other product (be like: Plane, building and decorate, electric home appliancesCNC Milling