1. Strain Gauge Project
LeShaun Alexander

2. Problem:
Detecting and measuring flow rates of very shallow and slow moving water requires special equipment which can be very expensive. The need to measure these flow rates is relevant to creek restoration societies locally.

3. Characteristic Table

4. Objectives Analysis A means to Measure Flow Rate in Shallow streams
Portable
Lightweight
< 5lb………………5 < 10lb……..………4 <15lb………..……..3 < 20lb……………..2 < 30lb……...………1 > 30lb…………..0
Inexpensive
<$25……….4 <$50……..3 <$75…………2 <$100……….1 >$100……….0
Easy to Use
Usable with Minimal Assistance
Non-Student Can Use…3 College Student………..2 Creek Employee………..1 Engineer……………….0
Large Screen
Graphics Display…3 LCD Display………2 Scrolling Display…..1 No display……..….0

5. Assigning Metrics Objective: Lightweight Objective: Inexpensive
Units: Rating weight on scale from 0 (worst) to 5 (best)
Metrics: Total weight of device from 0 (more than 30lbs.) to 5 (less than 5lbs.)
Objective: Inexpensive
Units: Rating cost of materials only 0 (worst) to 5 (best)
Metrics: Total cost of materials from 0 (more than $100) to 4 (less than $25)
Objective: Large enough screen to view information
Units: Rating whether the device has a large enough screen 0 (worst) to 3 (best)
Metrics: 0 (Device has no display) to 3 (Uses graphical display)

6. Assigning Metrics (cont.)
Objective: Usable with minimal assistance
Units: Rating ease of use on scale from 0 (worst) to 3 (best)
Metrics: Ease of use from 0 (Only an engineer can use it) to 3 (anyone who can read the manual)

7. Pairwise Comparison Chart
Goals
Inexpensive
Portable
Minimal Assistance
Large Screen
Score
***** 1 2 3

8. Morph Chart Functions Possible Means Measure Velocity Strain Gauge
Propellor
Pressure Transducer
Calculate Flow Rate
Arduino Pi
Calculate Depth
Columnal Pressure
Physical Ruler

9. Design Selection Functions Possible Means Measure Velocity
Strain Gauge
Propellor
Pressure Transducer
Calculate Flow Rate
Arduino Pi
Calculate Depth
Columnal Pressure
Physical Ruler

10. Questions