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Strain Gauge Project LeShaun Alexander

Strain Gauge Project

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Strain Gauge Project. LeShaun Alexander. 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. . Characteristic Table. - PowerPoint PPT Presentation

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Page 1: Strain Gauge Project

Strain Gauge ProjectLeShaun Alexander

Page 2: Strain Gauge Project

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.

Page 3: Strain Gauge Project

Characteristic Table

Page 4: Strain Gauge Project

Objectives AnalysisA 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…3College Student………..2Creek Employee………..1Engineer……………….0

Large Screen

Graphics Display…3

LCD Display………2

Scrolling Display…..1

No display……..….0

Page 5: Strain Gauge Project

Assigning Metrics• Objective: Lightweight

• 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)

Page 6: Strain Gauge Project

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)

Page 7: Strain Gauge Project

Pairwise Comparison ChartGoals Inexpensi

vePortable

Minimal Assistance

Large Screen

Score

Inexpensive ***** 0 1 1 2Portable 1 ***** 1 1 3Minimal Assistance

0 0 ***** 0 0

Large Screen 0 0 1 ***** 1

Page 8: Strain Gauge Project

Morph ChartFunctions Possible Means

Measure Velocity Strain Gauge Propellor Pressure Transducer

Calculate Flow Rate

Arduino Pi

Calculate Depth Columnal Pressure

Physical Ruler

Page 9: Strain Gauge Project

Design SelectionFunctions Possible Means

Measure Velocity Strain Gauge Propellor Pressure Transducer

Calculate Flow Rate

Arduino Pi

Calculate Depth Columnal Pressure

Physical Ruler

Page 10: Strain Gauge Project

Questions