Identifying Design Category • Creative • New and innovative design • Variant • Variation of existing design • Improve performance • Add more features • Routine • Well known • Combine creativity and new technologies • Complex
Design Type Differences • Each Design category can fall in one of the following types • Technical evaluation project • Use of new technology • System test • Ensure meeting all the needs • Experimental design project • Find system characteristics • Analytical projects • Find failure modes and probability of failures • Applied research project • Creation of new technology based on existing ones • Fundamental Research Project • Discover new scientific principles
Project Selection Criteria – Questions to ask! • What are you trying to do? Articulate your goals • How is it does today? Limitations? • What difference does it make? Who cares? • What are the risks and payoffs? • How much will it cost? • How long does it take? • What are the benchmarks to check for success?
Project Selection Criteria – Creating AHP Model • Determine the selection criteria • Your interests; technical complexity; creativity; innovation; marketing potential; etc. • Determine the weighting for each criteria • Create the AHP • Review the scores and adjust as needed!
Identify the Needs • What is the problem? • Don’t fall for a wrong problem • Make sure problem and solution are not given to you! – You have no design there! • Understand the problem and need • Do you have a design space – all possible solutions Problem of Eliciting needs Marketing Spec. Engineering Spec.
Process to obtain Voice of the Customer • Gather raw data from users • What are the pros and cons of the existing process • Understand the process and problem • Interpret the raw data in terms of needs (Need) • What is the customer requirement (marketing specification) • Not quantified – they use terms such as: good, easy, user friendly, etc. • Design an audio device that is portable, easy to use with high quality. (extension) It should be water resistance, long lasting, small and drop resistance. • Quantify the needs (Tree) • Establish an objective tree • Ranking the relative importance of each specification • Understand the background and existing solutions (Survey) • Use all available resources: Internet, Technical, Journals, Government statistics, etc.
Sources for Survey • EE Product Center, www.EEProductCenter.com. A website for locating electronic components and their manufacturers. It provides links to product datasheets and application notes. It has a keyword search engine and a tree structure search for finding components. For example, you can start with op amps and delve into subcategories such as precision and high-speed. • Circuit www.CircuitCellar.com. This companion website for the magazine is a great reference for designers. It emphasizes embedded systems and electronics projects with many tutorial articles and project ideas. • Datasheet Catalog, www.DatasheetCatalog.com. A datasheet source for electronic components and semiconductors. • Dr. Dobbs, www.ddj.com. The magazine and companion website are a resource for software developers that includes tips and tutorials. • EE Times, wLuw.EETimes.com. Industry newspaper for the electrical engineering field with information on current technology developments. • Electronic Magazine, wwro.EDNmag.com This is a free magazine for electrical design engineers that provides information on the latest products. The website has a number of categorized technical resources and a design ideas section. • OK Semiconductor, www.OnSemi.com. OK Semiconductor is a supplier of semiconductors for a wide range of applications, with a particular emphasis on power management. The website has a searchable database of over 15,000 components, and provides guidelines for component selection based on different applications. • The Thomas Register, www.ThomasRegister.com. This is a source for finding companies and products in Korth America. It allows searches for parts and equipment that may be used in a design project. It provides profiles of companies that meet the search criteria and describes the products they make.
Assignment • Individual: Pick a project topic (anything) – Define your different criteria in order for this project to be an interesting project to you (meeting a need, low cost, innovative, patentable, etc.) Create an objective tree for the topic. You must present this in class. • As a team agree on two possible project ideas. Create an objective tree for each project idea. Try to agree on which project seems to be more viable.