P07007: Adapted Home Entry Sponsor: National Science Foundation Wenbo Chen Project Manager, EE Tanvir Rasel EE Meklet Kidane EE Faculty Mentors: Dr. Elizabeth DeBartolo Dr. Daniel Phillips

The Adapted home entry system is designed to help people with disabilities to easily gain access to their home without assistance. One house has two residents that can not operate their front door due to their disabilities. Last years team developed a unit that allows them to operate the front door using a remote control. The hardware for this design is functional, but the control system does not function properly and must be redesigned P07007: Project Background

Project goal: To design and build a robust control system to run the existing hardware. Market: Residences with individuals with physical disabilities. Customer: Arc of Monroe County Michelle Antonelli (House Manager) P07007: Project Description

Open and close door manually as well as with a remote. Minimum maintenance/ repair. <= once every 6 months Prevent personal injury from door movement. speed of door <= 19.2 deg/sec. force needed to stop door <= 15 lbs. use of motion detectors Presentable overall appearance all components and wiring enclosed in casing Design within budget <= $1200 P07007: High Level Customer Needs

P07007: Design Concept Door Overview

P07007: Design Concept Inside Box Design

Optical switch design and placement P07007: Design Concept

Software Flowchart

P07007: Design Concept Control system wiring diagram

Over Voltage –Solution: use over voltage limiter use fuses Failure of micro switches and encoder –Solution: eliminate encoder –Solution: replace with optical switches that will not involve contact Short Circuit –Solution: use PCB to limit wires use shrink tubes to insulate wires Components overheat –Solution: include a fan to circulate air throughout device P07007: Risk Assessment

Phase 0: Meet with customer and define needs Phase 1: Concept development and selection Phase 2: System level design Phase 3: Detailed Design Phase 4: Testing, debugging, and documentation MSD 1MSD 2 Current phase of development P07007: Product Development Process Phase

Design meets all customer needs Control system design/layout complete. System flowchart complete. Current budget status: –Available: $1200 –Expected cost: $740 All components will be ordered next week –Only long lead item is PIC microcontroller development board (2 weeks) P07007: Current State of Design

Mar.19: Design verification completed, PCB design completed. Mar.26: Software developed and tested. Apr.20: Software and Hardware combined and tested. May 04: Build casing for system. May 11: Write user manual, formal paper & poster. May 18: Project Review - Phase 4 Completion P07007: MSD II Project Schedule Milestones

QUESTIONS?