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

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.

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

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.

Specifications and requirements The system will control the power to specified devices: < 20A @ 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

Block Diagram Overall design

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.

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

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

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

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

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

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

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

Hardware Circuit Design

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.

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

PCB layout

Kiosk Presentation and Authentication

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

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

Kiosk Operating System

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)

UI Flowchart

Software design

Work Distribution

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.

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

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

Progress

Questions