Slide 1 Design Process Overview (Material developed by Project Lead the Way) What is Design? The word “design” is often used as a generic term that refers to anything that was made by a conscious huma.aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
The Engineering Design Process Creative process Problem solving – the big picture No single "correct" solution Technical aspects only small part Textbook: Design for ECE Engineers, Ford & Coulston Elements of Design the Process Problem Identification Research Phase Requirements Specification Concept Generation Design Phase Prototyping Phase System Integration Maintenance Phase Textbook: Design for ECE Engineers, Ford & Coulston Cost of Design Changes Costs increase exponentially as the project lifetime increases Text book: Design for ECE engineers Ford & Coulston Problem Identification and Requirements Specification Textbook: Design for ECE Engineers, Ford & Coulston Needs Identification What is the Problem? Collect information Interpret information Organize needs hierarchy Determine relative importance of needs Review outcomes and process Textbook: Design for ECE Engineers, Ford & Coulston Example Needs Hierarchy Textbook: Design for ECE Engineers, Ford & Coulston Problem Statement Example 2.1 Need: Drivers have difficulty seeing obstructions in all directions Objective: design system to avoid accidents Textbook: Design for ECE Engineers, Ford & Coulston Requirements Specification Identifies requirements design must satisfy for success Marketing requirements Customer needs Engineering requirements Applies to technical aspects Performance requirements Textbook: Design for ECE Engineers, Ford & Coulston Properties of Engineering Requirements Abstract – what, not how Unambiguous – unique and specific Unlike marketing requirements Traceable – satisfy need? Verifiable – test/measure Textbook: Design for ECE Engineers, Ford & Coulston Example Engineering Requirements Performance and Functionality Reliability Will identify skin lesions with a 90% accuracy Should be able to measure within 1mm Operational 99.9% of the time MTBF of 10 years Energy Average power consumption of watts Peak current draw of amp Textbook: Design for ECE Engineers, Ford & Coulston 10 ...Elements of Design the Process Problem Identification Research Phase Requirements Specification Concept Generation Design Phase Prototyping Phase System... Maintenance Phase Textbook: Design for ECE Engineers, Ford & Coulston Cost of Design Changes Costs increase exponentially as the project lifetime increases Text book: Design for ECE engineers... relative importance of needs Review outcomes and process Textbook: Design for ECE Engineers, Ford & Coulston Example Needs Hierarchy Textbook: Design for ECE Engineers, Ford & Coulston Problem