1. Asset Control System Group 5
Daniel Williams Cpe
Kenneth Sullivan Cpe
Casey Quinn EE
Carley Baltromitis Cpe

2. Introduction
Asset control System is a minimized approach to controlling access and tracking use of sensitive assets.
The system can be purposed for multiple usage applications.
The system can be scalable and will contain multiple devices that communicate.
This system will provide a means for billing of usage and could even calculate usage.

3. Motivations
The need for a reliable, cost efficient solution to access restricted devices
Advanced restriction capabilities are lacking in the field of competing systems
Customization for different uses and controls
Scalability when additional devices are introduced
Varying access levels for management of the system and users

4. Goals Login security User interface readability Administrative Ability
Report capability
All-inclusive design
Tracking accuracy and asset status
Authentication
Database integrity, Device control integrity, and Durability.

5. Specifications and requirements
The system will control the power to specified devices: < 120 VAC
The system will provide feedback to user on status.
The system will record and provide user history.
Wireless communication between device and system will use RFID.
The system will not occupy a space larger than 8x8x5 in3

6. Block Diagram Overall design

7. Problems and Concerns
System integrity : In order to fulfill the main requirement of the system we will need to ensure that security levels are sound and not breachable.
System accuracy : It is paramount that the system records accurate data on usage.
Correct status reporting : the system must poll and track the connected devices for tracking of disconnect or failure.

8. Microcontroller selection
PROs
CONs
MSP430
Really low power
Can obtain for free
Took course based on MSP430
Less support available
Less features
ATMega328
Vast support online
Cheap
Fast (up to 20MHz)
Higher power consumption
Not free

9. Microcontroller selection
ATMega328
8-bit architecture
32 KByte flash memory
Up to 20MHz clock
23 I/O pins
AVR-based
Various methods of communication i.e. SPi, UART, I2C

10. Embedded PC (Raspberry Pi 3)
For communication with the database and logging user information
Interfaces with access device
Wireless communication: either bluetooth or Wi-Fi
Windows 10 IoT supported
Huge online community for support

11. Touchscreen/LCD
Allow for administrative interfacing, such as new user information and troubleshooting.
Allow for default user login method and feedback
Official Raspberry Pi Screen for direct compatibility

12. Switch selection Switch Choice PRO CON Transistors (Mosfet/BJT)
Quick switching
No moving parts
Do not do well with High power applications
Silicon Controlled Rectifier (Thyristor)
Handles high power
Requires manipulation of source power signal
Standard Relay
Widely used
Moving parts

13. Switch selection Fujitsu VF series Current rating up to 30A
Turn on voltage (coil voltage) at 3- 5V
Quick connect terminals

14. Power supply selection
Mean-Well RS-50-12
50W at 12V
Small footprint: 4x2x1.25”
Non-wall mount design

15. Hardware Circuit Design

16. Power circuitry Using two separate voltage regulators
Both provide 5 volts of power
LM2936DT is an ultra low noise regulator to power the microcontroller.
LD1085CDT is an adjustable regulator that has higher current output to provide the Raspberry Pi 3.

17. Microcontroller Circuitry
Using external clock
Headers to make available I2C and UART connections for Raspberry Pi
Access to ISP pins to allow for on board flashing of microcontroller

18. PCB layout

19. Kiosk Presentation and Authentication

20. Access Control method Method PROs CONs Fingerprint Scanner Newer tech
No cards or tags needed
Harder to circumvent
Higher false-negative rate
Cost
RFID
Quick access permission
Cheap
Easy to implement
Small footprint
Easier to bypass
Range/signal interruption
Magnetic strip
Easy to use
UCF IDs utilize it
Easiest to bypass
Durability

21. Access Control method 2.5 - 3.3V Operates on 13.56 MHz range
848 kbit/s data transmission
SPi, UART, I2C
50mm range
Below 100 mA

22. Kiosk Operating System

23. Kiosk Operating System
Windows 10 IoT Core Build 14342
Apps utilize a C#/XAML stack
Previous .NET Development
Out-of-the-box support for:
Official Raspberry Pi display/touchscreen
Onboard Wifi adapter (Raspberry Pi 3)

24. UI Flowchart

25. Software design

26. Work Distribution

27. Financing
Originally funding was expected to be through the University of Central Florida’s Reza Abdolvand.
Funding will be reliant upon the team members and will be split proportionately between each member.

28. Budget Based Design Decisions
Casing Manufacturing:
3D Printing
Access Restriction:
RFID vs Magnetic Strip
Recycling:
Router, Server

29. Budget Item Source Cost Quantity Total Item Source Cost Quantity Total
RFID Tags
Amazon
$1.50 5
$7.50
Capacitor 10 uF
Mouser
$0.48 15
$7.25
Capacitor 22 pF
$0.03 20
$0.58
Capacitor 100 nF
$0.01 10
$0.09
Resistor 1.6k ohm
$0.04
$0.41
Resistor 3.3k ohm
$0.38
Resistor 360 ohm
$0.36
Resistor 120 ohm
$0.31
Resistor 68 ohm
$0.76
Resistor 50.1 ohm
Resistor 0 ohm
$0.62
Total
$436.03
Item
Source
Cost
Quantity
Total
Raspberry Pi
Adafruit
$35.00 3
$105.00
Raspberry Pi Touchscreen
$60.00
$180.00
ATMega 328
Mouser
$3.57 5
$17.85
Arduino Uno
$24.95 1
OVSTRGBB1CR8 LED RGB
$1.47
$7.35
Fujitsu 817-VF-5MU Relay
$9.28
$27.84
LM2936DT-5.0
$1.85
$5.55
LD1085CDT-R
$1.60
$8.00
20MHz Oscilator
$1.29
$6.45
Mean Well AC-DC 12V
Jameco
$11.49 3
$34.47

30. Progress

31. Questions