Engineering 121 - Engineering Problem Solving II

Spring Quarter 2014 Schedule

Things to bring to class: L = Laptop R = Robot M = Multimeter T = all Tools W = water bottles  
Color code for topics: Projects / Hands-on Fundamentals  Software Communication Broadening / Design Assessment
class topic download
1
W - Mar 12
R - Mar 13
L, T

Course Overview
Icebreaker

Introduction to the Fishtank Project
Fabrication of Fishtank Platform

fishtank project assignment
fishtank platform fabrication
homework 1

2
M - Mar 17
T - Mar 18
L, T, FT

Fabrication of Conductivity Sensor - Group A (teams of 2)
Fabrication of Reservoir - Group B (teams of 2)
Assembly of Fishtank Flow Loop & Wiring

conductivity sensor fabrication - PowerPoint
(video1, video2, video3, video4, video5)
fishtank reservoir fabrication - PowerPoint
(video1, video2)
homework 2

3
W - Mar 19
R - Mar 20
L, T, R, FT

Salt Water Chemistry - Conductivity Sensor Circuit
LCD Wiring & Programming
Fabrication of Conductivity Sensor - Group B (teams of 2)
Fabrication of Reservoir - Group A (teams of 2)
Assembly of Fishtank Flow Loop & Wiring

conductivity sensor intro: PP and PDF
LCD wiring & programming
conductivity measurement system
homework 3

4
M - Mar 24
T - Mar 25
L, FT, M, W

Salt Water Chemistry - % Weight
Calibration of Conductivity Sensors

salt water chemistry - % weight
conductivity sensor calibration
homework 4

5
W - Mar 26
R - Mar 27
L, M, FT

Global & Societal Issue #1 Presentation and Discussion
Conservation of Mass - Introduction and Batch Problems
Implement Transistors on Breadboard to Switch LEDs
Run Program to Switch LEDs

Semiconductors and Transistors

conservation of mass - introduction
extended solution for class problem
using a transistor to switch an LED
transistor theory
homework 5

6
M - Mar 31
T - Apr 1
L, T, FT

Quiz 1
Conservation of Mass - Rate Problems
Switching with Relays - Robot Current Limits, Power Supplies, Coil Voltage
and Current, Switched Current, On-Board Voltage Regulator (1A), . . .


conservation of mass - rate problem
relays
cascaded switching of a solenoid valve
homework 6

7
W - Apr 2
R - Apr 3
L, R, M

On-Off Control of Salinity
Upper & Lower Control Limits
Deadtime Compensation
Material Balance for Fishtank Salinity Control

control of salinity
material balance problem
homework 7

8
M - Apr 7
T - Apr 8
L,M,FT,W

Preparation for Salinity Control Testing
(Recalibration, Random Error Determination, Deadtime Compensation,

Fitting, UCL, LCL, Control Equations, LCD Display Requirements)

preparation for salinity testing
flowchart for sketch
fishtank programming tips
evaluation of salinity control
homework 8

9
W - Apr 9
R - Apr 10
L,T,FT,W

Testing of Salinity Control Systems

homework 9

10
M - Apr 14

college wide exam 1 from 7 - 9 p.m.
this is a closed book exam
both sections meet in Davison 213

formula sheet
material balance problems

material balance solutions
2011 exam 1
2012 exam 1
2013 exam 1

11
W - Apr 16
R - Apr 17
L

Design of RTDs - Resistor Design
Using SolidWorks to Draw Resistor Pattern
Global & Societal #2 - Discussion

temperature measurement & RTDs
SW template
tips for drawing RTD pattern
homework 10

12
T - Apr 22
W - Apr 23
FT, L, M

Conservation of Energy - Response Time of Heater
In-Class Problem to Compute Response Time

RTD Circuit

conservation of energy notes
conservation of energy PP
RTD circuit and potentiometer
homework 11

13
R - Apr 24
M - Apr 28
L, FT, M

Fabrication of RTD Lecture - Processes & Equipment
Fabrication of RTDs (one group at a time)
System Wiring & Programming (when not fabricating RTD)

RTD fabrication
thermistor waterproofing
homework 12

14
T - Apr 29
W - Apr 30
L, FT, M

Fabrication of RTD Lecture - Processes & Equipment
Fabrication of RTDs (one group at a time)
System Wiring & Programming (when not fabricating RTD)

continuation of class 13
homework 13

15
R - May 1
M - May 5
L, T

Measuring RTDs
Attaching leads to RTDs
Sealing RTDs
Preparation for Calibration

heater fabrication
characterization and preparation of RTDs
homework 14

16
T - May 6
W - May 7
L, FT, W

Quiz 2
Calibration of RTDs and Final Fishtank Programming

calibraiton of RTDs
calibration of thermistors
RTD resistance variation with temperature
evaluation of fishtank control
homework 15

17
R - May 8
M - May 12
L, FT, W

Fishtank Systems Due
Instructor Checks for Working Systems
presentation tips
grading sheet for presentations
homework 16

18
T - May 13
W - May 14
L, FT

Seven Minute Team Fishtank Project Presentations

homework 17

19
R - May 15
M - May 19
L, FT Parts

Course Assessment
Return of Parts (valves, heaters, reservoirs, relays, . . .)
Exam Review

homework 18

20
W - May 21

college wide exam 1 from 7 - 9 p.m.
this is a closed book exam
both sections meet in Davison 213