1. Prototype Parking Meter - Phase 8 Dec07-02
Bret Schuring: Team Leader
Pooja Ramesh: Communications
Wilson Kwong, Matt Swanson,
Alex Wernli
Bret

2. General Problem Statement
Company who manufactures/maintains current system is out of business
DPS (Department of Public Safety) requested new meters be built
Bret

3. LCD
Keypad
Computer
Coin Acceptor
Printer
Bret
Thermostat
UPS

4. System Overview Parking Lot Secondary Unit Primary Unit Secondary Unit
Bret
Secondary
Unit S

5. Primary Unit – FUNCTIONAL REQUIREMENTS
Two component unit
Master – Parking lot database
Slave - User interface
Supports user interface peripherals:
Coin acceptor
Printer
Keypad
LCD screen
Pooja
Master DB
Slave
I/O

6. Secondary Unit – FUNCTIONAL REQUIREMENTS
One component unit
Slave - User interface
Identical user functionality
Supports user interface peripherals:
Coin acceptor
Printer
Updated keypad and encoder
LCD screen
Slave
I/O

7. Non-functional Requirements
The system should be able to run for four years without any major failures
All documentation must be available to maintain the system
Parts for backup unit should be made available
All exposed metal parts should be grounded (leakage current)‏
Pooja

8. Status at Beginning of Semester
First unit built
System tested
Installed 3/5/07
Beta test – Phase I
Pooja

9. PLANNED TASKS Maintenance/Support Build and install second slave
Beta Testing – in Phase I
Build and install second slave
Develop long term support strategy
Fix database redundancy
Complete documentation
Wilson

10. Printer Jam PROBLEM TESTING
On-site printer would jam while printing receipts
TESTING
Different paper thickness
Tested printer in the lab
Different directions of pull
Different testers (people)
Wilson

11. Printer Jam RESULTS Conclusion Solution
The mounting plate restricted paper from dispensing
Solution
Cut the lid to allow smooth dispensing of paper
Before Fixing
Once every 2-3 days average
After Fixing
Once every 2 weeks
Wilson

12. Software Crash Testing
Issue: Software was crashing
Temporary solution
Software Watchdog
Testing Approach
Test common user functions
Monitor memory usage through task manager
Results
Found memory leak
Receipt printing
Matt

13. Memory Leak Tests 5 Print lot usage 10 Clear audit information 11
Initial 2
Add coin 3
Print lot status (Paid) 4
Print lots status (Unpaid) 5
Print lot usage 6
Print individual lot usage 7 8
Print audit information 9
Print yearly audit information 10
Clear audit information 11
Clear audit information - repeat 6 times 12
Print list of Admin 13
Print ID 14
Specify time 15
Added time to parking lot 16
Print list of invalid login attempt 17
Clear audit info - repeat twice 18
Clear yearly audit information 19
Add coin and cancel - repeat twice
Matt

14. Daylight Saving Time Issue with recent daylight saving time change
Time changed one week early
Fixed with a Windows patch
Applied patch to target designer
Matt

15. BETA TESTING Phase I Phase II
Provide unit support March 07 – December 07
ECpE Technicians will provide long term support
Phase II
New Senior Design Team
ECpE Technicians

16. Second Unit New slave unit New shelving design Heater / Light Circuit
Normal thermostat operation
“Always On” state for working at night
Filter to block snow ingress
New layout for increased safety and efficiency
Can be connected to current unit in the field
Alex

17. DATABASE REDUNDANCY Redo XPe images
support MySQL
Firewall settings
Time synchronization
Installation of MySQL on both masters
Set up data replication
Testing database redundancy
Update documentation
Alex

18. DOCUMENTATION Project Plan Design Document
Software Functionality Report
User Guide
Installation and setup guide
Test documents
Parts List
Final Report
Alex

19. Planned Semester Hours
Conclusions
Planned Tasks
for semester Fall-07
Status
Planned Semester Hours
Hours Spent
Cost Performance
Index
Schedule Performance
Maintenance/Support – Phase I
Completed
113.33
260
0.436 1
Build & Install Second Slave
100 85
1.176
Develop long term support strategy
(Leland Harker) -
Database Redundancy 34 50
0.68
Documentation 78 60
1.3
Total
325.33
465
0.813
Successful semester

20. Lessons Learned Assume previous teams exaggerated their completed work
Don’t assume previous team’s work is correct
Tended to underestimated work load
Keep all group members informed
Parts become obsolete and unavailable quickly

21. Acknowledgments Dr. Greg Smith Prof. Ralph Patterson Prof. John Lamont
Kyle Banwart
Leland Harker
David Arkovich
Melissa Gagne

22. Demo
Any Questions?