Analysis of Sensors and Multidimensional Information Environment Virtual Reality Technology
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The expression of design is a diversified form of display in the information age. The application of virtual reality technology has made the design ideas and design expression even more powerful. It gives people an intuitive, intimate and interactive experience. Compared with traditional products, the products developed and designed greatly reduce the risk of placing on the market, and also provide business decision makers with opportunities to determine whether the concept product can be further developed. Production provides better evidence.
I. Virtual Reality and Virtual Reality Technology (1) Virtual Reality (VR) and Virtual Design (VD)
Virtual Reality (VR) is a technology that uses a simulated environment of the provincial capital of a computer to enable users to “immerse†in this environment through a variety of sensing devices, enabling users to interact directly with the environment. The so-called simulated environment here is a computer-generated three-dimensional graphics with color. It can be a true embodiment of a specific real world, or it can be a purely conceived world. Sensing devices include devices such as stereo helmets, data gloves, data clothes, etc. that are worn on the user and sensor devices that are set in a real environment. Natural interaction refers to the operation of the martial arts within the environment and the real-time stereo feedback. Virtual reality is a brand-new human-computer interaction system that can generate various sensory stimuli for intervenors, such as auditory, visual, olfactory, and tactile sensations, giving people immersive feelings, and human beings can generate computers in natural ways. The environment interacts.
Virtual design is based on "virtual reality technology and design methods based on mechanical products". With this design method, designers can naturally interact with multiple information environments through multiple sensors to achieve qualitative and quantitative synthesis. The integrated environment gets perceptual and rational understanding, which helps deepen the concept and develop new ideas.
(2) Virtual Reality Technology Virtual reality technology is an integrated technology generated by the combination of human imagination and electronics. It uses multimedia computer simulation technology to form a special environment. Users can use various sensing systems and This kind of environment interacts with nature to experience a richer experience than the real world.
2. Definition and Connotation of Conceptual Design Since Pahl and Beitz proposed the term “conceptual design†in the book “Engineering Designâ€, people have been researching conceptual design for more than ten years. They define it as follows: After determining the task, through abstraction, drawing up the functional structure, and seeking appropriate combinations of the principle of action, the basic solution path is determined and the solution is obtained. This part of the design work is called conceptual design.
Domestic scholars also conducted a lot of research on conceptual design. Among them, Deng Jiaxuan defined “product concept design†in the book “Product Conceptual Design†as “a series of orderly and configurable items from analysis of user needs to generation of concept products. , with the goal of design activities, it appears as a process from coarse to fine, from fuzzy to clear, from abstract to concrete, and evolving.â€
In the course of several decades, people's research on conceptual design has been increasing and deepening, which makes the conceptual design more extensive and profound. Mainly reflected in: according to the requirements of the various stages of the product life cycle market demand analysis, functional analysis, functional working principle, the concept of action behavior, the choice of behavior carriers and the composition of the program. It can be seen that determining the solution is the final result of the conceptual design. The satisfaction of the whole process of the product life cycle is the key to conceptual design. The design method is more fully integrated with various methods to seek comprehensive optimal solutions while making the design more creative.
Conceptual design is the idea of ​​a product or part. The purpose is to capture the basic shape of the product. At this stage, the shape and exact dimensions of the product have not yet been determined, and designers have a certain freedom of change. Therefore, the design plan should be examined as much as possible in order to select the best production cost and creative solution. The use of traditional computer-aided design is often two-dimensional interactive tools, lack of three-dimensional or multi-dimensional functions, but the product is a three-dimensional component, which will inevitably lead to low efficiency of human-computer interaction. Current computer-aided design systems require the definition of part dimensions. Such dimensions may not be precisely or exactly defined at the conceptual design stage of the product, which inevitably affects design efficiency and cycle time. Traditional computer-aided design requires the cooperation of two types of personnel, namely the product designer and the computer draftsman. The concept information of the product designer about the product is conveyed to the computer personnel through a sketch or dictation method, which leads to the loss of information or the misinterpretation of the drafter. However, if the designer himself directly participates in computer-aided design modeling, due to the complexity of the current computer-aided design system and the ability to interact, the designer's energy is greatly distracted and the ideas are limited. In order to overcome such limitations and give full play to the creativity of designers, people began to introduce virtual reality technology into computer-aided design systems for conceptual design, effectively combined virtual reality technology and conceptual design, and utilized rich and intuitive interactive means to perform in a virtual environment. Conceptual design, thereby saving the time for accurate depiction and dimensional definition of the product, is based on virtual reality technology for computer-aided conceptual design, ie virtual concept design.
Third, the research direction and application prospect of the virtual conceptual design (a) two issues that should pay attention to in the conceptual design 1. Conceptual visualization in the virtual reality environment. Conceptual visualization means that the designer converts the needs of the market into specific forms of visualization through screens or models. Whether the concept design can meet the requirements of the target user, the "view is seen" picture or model is the most convincing.
2. Human-computer interaction interface in virtual reality environment. To realize human-computer interaction, it is necessary to solve a series of technical problems and form a harmonious man-machine environment. Virtual reality is an immersive interactive environment based on calculable information. Specifically, a virtual environment with a specific range of visual and auditural haptics integrated in the modern high-tech provincial city with computer technology as its core. The user uses the necessary equipment to The natural way interacts with and interacts with the objects in the virtual environment, resulting in feelings and experiences that “immerse†in the equivalent real environment.
(II) Prospects of Virtual Reality Technology in Conceptual Design Under the virtual reality environment, conceptual design of products is the basic content of virtual reality technology. Under the conditions of good visualization provided by computer virtual reality, the three-dimensional model created by computer-aided design is interactively modified in terms of geometry, function, processing and assembly, and virtual reality is used to provide users with various perceptual interactions such as audio-visual touch. Means to maximize user-friendly operation, thereby reducing the burden on users, improve the efficiency of the entire system. Relevant personnel can evaluate all aspects of the prototype, including visual effects and the ratio between parts. For different user's hobby requirements, in a different virtual environment, personally experience the modification model; select the optional components of the product, observe the design and modification process.
Faced with the ever-increasing challenges of product market competition, it can be foreseen that computer-aided conceptual design based on virtual reality technology will have a long-term development and will eventually integrate seamlessly with existing computer-aided design systems.