Elizabethtown College

1
Elizabethtown College

• Would like to present

2
Wheel Chair Sensors 2005

• Staff
• John Mink
• Alex Rankowski
• Stephany Shultz
• Jeff Cowan

3
The Heislers

• Charles and Joann Heisler are local residents of
  Lancaster.
• They both live at The Glen nursing center in
  Willow Valley.
• They are both very nice people and really young
  at heart.

4
Problem

• Mr. Heisler has a disability called MS and it
  effects his ability to drive his wheelchair
  effectively.
• He tends to bump into walls and tables because he
  cannot determine the distance between the two.

5
Objective

• Our team objective is to place sensors on a
  electronic wheelchair in order to help vision
  impaired personnel to drive better and safer.
• The sensors will determine how close the
  wheelchair is to its surrounding walls.

6
Design Specifications

• Our design consists of four strategically placed
  Sonar sensors.
• Two sensors placed in the front and two sensors
  located in the back.

7
Design Specifications

• The sensors are connected to a micro controller
  and a tiny speaker that informs Mr. Heisler when
  he is getting too close to the wall.
• All of these components are powered by the
  wheelchairs battery which can be plugged in to
  any outlet when needed to be charged.

8
Construction of the Project

• Phase One
• Research for best possible solution
• Create time line and goals
• Contact the Heislers

9
Construction of the Project

• Phase Two
• Meet the Heislers
• Learn as much as possible about Charles and his
  disability.
• Examine Mr. Heislers environment
• Learn how to program code for the sensors
• Learn how to connect all the components together.

10
Construction of the Project

• Phase Three
• Buy microcontroller
• Buy sensors
• Buy all the needed wiring and soldering materials
• Buy speaker/alarm and the on/off switch
• Create code/program for the micro controller
• Wire the system

11
Construction of the Project

• Phase Four
• Pick up the wheelchair from The Glen nursing
  center
• Put together the sensors
• Load code to microprocessor
• Connect the speakers and sensors to
  microprocessors
• Connect on/off switch to microprocessor

12
Construction of the Project

• Phase Four Part Two
• Mount all components to wheelchair
• Connect all mounted components to the wheelchair
  battery
• Testing and critiquing of the sensors and
  wheelchair

13
Budget Our Budget was 450.00

• The microprocessor and sensors were bought from
  www.parallax.com
• All supplies was bought from Radio Shack
• Supplies included
• Wiring, Switch, Speaker, Soldering Kit,
  Resisters, Capacitors, Diodes, and Boxes

14
Thank You

• The End