The Building Plan Process.


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ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford
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The Engineering Design Process Creative procedure Problem fathoming – the master plan No single "correct" arrangement Technical perspectives just little part ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Elements of Design the Process Problem Identification Research Phase Requirements Specification Concept Generation Design Phase Prototyping Phase System Integration Maintenance Phase ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Cost of Design Changes Costs increment exponentially as the undertaking lifetime builds ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Problem Identification and Requirements Specification ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Needs Identification What is the Problem? Gather data Interpret data Organize needs progressive system Determine relative significance of necessities Review results and process ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Example Needs Hierarchy ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Problem Statement Example 2.1 Need : Drivers experience issues seeing checks every which way Objective : plan framework to keep away from mishaps ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Requirements Specification Identifies prerequisites outline must fulfill for achievement Marketing prerequisites Customer needs Engineering prerequisites Applies to specialized perspectives Performance prerequisites ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Properties of Engineering Requirements Abstract – what, not how Unambiguous – remarkable and particular Unlike promoting prerequisites Traceable – fulfill need? Irrefutable – test/measure ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Example Engineering Requirements Performance and Functionality Will distinguish skin sores with a 90% exactness Should have the capacity to quantify inside 1mm Reliability Operational 99.9% of the time MTBF of 10 years Energy Average force utilization of 2 watts Peak current draw of 1 amp ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Properties of Requirements Specification Normalized (orthogonal) set Complete set Consistent Bounded Granular – framework versus part Modifiable From IEEE Std. 1233-1998 ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Constraints Economic Environmental Ethical and Legal Health and Safety Manufacturability Political and Social – FDA, dialect? Maintainability ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Standards Examples – RS-232, TCP/IP, USB Types Safety Testing Reliability Communications Documentation Programming Languages ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Concept Generation and Evaluation Explore numerous arrangements Brainstorm Select the best arrangement Based on necessities and imperatives Creativity Development of new thoughts Innovation Bringing inventive thoughts to reality ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Creativity ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Barriers to Creativity Perceptual pieces Limiting issue space Emotional squares Fear of disappointment – "come up short early and frequently" Environmental squares Engineering social predisposition Intellectual and expressive squares Understand apparatuses ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Strategies to Enhance Creativity Lateral speculation Question Practice Suspend judgment Allow time Think like an apprentice ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Concept Generation Substitute – new components Combine – existing components Adapt – diverse operation Modify – size, shape, capacity Put to other use – other application areas Eliminate – parts or entire Rearrange or turn around – work better ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Concept Table ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Concept Evaluation ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Considerations WORST CASE DESIGN Component variety Environmental conditions Use PC reproductions ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Considerations 2) RELIABILITY measured by MTBF, disappointment rate = 1/MTBF mechanical parts fall flat first outline excess into framework straightforward framework/less parts = more solid ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Considerations 3) SAFETY recognize disappointment modes give assurance 4) TEST plan for simplicity of test 5) PRODUCTION/MANUFACTURING consider simplicity of get together ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Methodologies: Top-Down Also called "utilitarian decompostion" usage subtle elements considered just at the most reduced level top‑down configuration, is not all that spotless and direct by and by Often implementation‑level duties are made at abnormal states in the outline procedure ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Methodologies CASE‑BASED: Research a particular, comparative outline contextual analysis Model your procedure on that INCREMENTAL REDESIGN: Find a current configuration and "unravel" the configuration from the base up Modify as required Detailed and minimum worldwide parts of the outline are investigated and updated, if essential, first ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Methodologies ITERATIVE REFINEMENT: An iterative top‑down approach First an unpleasant, rough and general outline is finished Then we do it better, more correct and more particular This procedure proceeds iteratively until the complete point of interest outline in done ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Methodologies BOTTOM‑UP DESIGN: Opposite of top‑down Start at the base with point of interest configuration To do this, you should have some thought of where you are going. Along these lines, regularly this gets to be... Half breed DESIGN: Combines parts of both top‑down and bottom‑up More viable configuration approach then immaculate top‑down Start with a top‑down approach, yet have input from the base ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Methodologies "EXPLORER" METHOD: Typically utilized for new outline thoughts or exploration. It is valuable in starting outline and determination organizes, and is frequently utilized when as a part of "unfamiliar territory": Move in some course; e.g. around the library, phone, area master\'s office, and so forth. Take a gander at what you find there. Record what you find in your note pad. Break down discoveries as far as where you need to be. Use aftereffects of examination to pick next bearing. Back to 1) and keep investigating ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Top-Down Application: Digital Design SIMPLE DIGITAL STOPWATCH Engineering necessities No more than two control catches Implement Run, Stop and Reset Output a 16-bit twofold number for quite a long time ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Top-Down Design: Level 0 ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Top-down Design: Level 1 ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Top-down Design: Level 1 (cont\') ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Top-down Design: Level 1 (cont\') ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Group (Team) Engineering ventures require assorted aptitudes This makes a requirement for gathering (group) work Select individuals in light of abilities Technical Problem-unraveling Interpersonal ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Group (Team) Develop basic leadership rules Decision by power (pioneer) Expert Member Average part conclusion Majority Consensus ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Group (Team) Teams that get to know each other have a tendency to be fruitful groups Respect each other Listen effectively Consider your reaction to others Constructively censure thoughts, not individuals Respect those not present Communicate your thoughts successfully Manage struggle productively ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Design Group (Team) Hold compelling gatherings Have a motivation Show up arranged Pay consideration Schedule time and place of next meeting Summarize Assign undertakings and obligations ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Project Management Work breakdown structure Hierarchical breakdown of errands and deliverables need to finish venture Activity Task – activity to fulfill work Deliverable – e.g. circuit or report ECE 404 Scott Umbaugh, Textbook: Design for ECE Engineers, Ford & Coulston

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Project Management Define for every movement Work to be done Timeframe Resources required Responsible person(s) Previous ward exercises Check

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