Ultra Trace Cargo Monitoring Kevin Kurtz - ECE Jacob Klapheke - ECE Nick Searcy - ECE Nick Wood - ME Jason Guelda - ME

Ultra Trace Background Company formed on UofL’s Campus Includes several campus researchers Ultra Trace’s product goal stems from recent incidents – Prevent bombs and drugs from being shipped via planes and boats

Ultra Trace Cargo Monitor Specifications Blows ambient air over MEMs capture device Targeted particulates are captured and stored in these MEMs devices Monitoring runs last up to two weeks long. The MEMs device is attached to the Vapor Trace analyzer once a run has been accomplished. Targeted particles include drug paraphernalia, bomb components, and other illegal chemicals.

Status Prior to Hand-Off Previous group had a PIC development board functioning – Utilized a real time clock – Utilized redundant fan controllers Prototyped container was fabricated

Goals of Semester Have a custom printed circuit board fabricated Have developed code Have custom container to house fans, PCB, and MEMs device Meet all established product goals Be as low cost as possible

Operational Concept Runs as long as two weeks Turn on one fan for five minutes every hour – If fan fails, switch to backup fan Monitor temperature for extremes – Temp < 0 C – Temp > 120 C Record time and temperature of every fan run Indicate good/bad runs when activated

System Diagram

Device Specifications Pic 18F2520 – Built in Crystal Oscillator – 10-Bit A/D Channels (1 required) – I 2 C and UART Interfaces Accurate Real-Time Clock Fan Controllers to Detect Fan Failure USB Interface to Laptop External EEPROM for Data Collection

Fan Controller Fan Fail Detector – Relays digital signal (high +5v, low 0v) if fan is functioning correctly. Fan On Signal – Allow fan to be turned on and off with the Micro-controller without a separate transistor. Convenient +5v Operation

USB Interface USB to UART Convertor for easy communication with a PC. UART from the microcontroller is converted to USB via a separate IC. Appears as a virtualized COM port on the PC for easy interfacing with programs.

External EEPROM 8KB EEPROM for data collection purposes. Storing Temperature and Timestamp data once an our for 2 full weeks (336 Hours) I 2 C Interface to conveniently communicate on same 2 lines as the RTC. Required 2016 Bytes of data.

USB Configuration Interface Initial Configuration Set-Up -Auto-Detects COM ports -High and Low Temperature Thresholds -Amount of time per hour that the fan is on -Set the Device Time Import data from the EEPROM -Pulls in data as CSV file for use in excel

Schematic

Board Layout

Current Status Version 2 Rev 1 of Schematic is completed Version 2 Rev 1 of Board Layout in progress Software proof of concept is completed – Final Software in progress

Looking Forward Hardware Breadboarding of parts will allow us to finalize – Schematic – Board Layout Thorough proof-read of schematic and layout Software Develop – Microcontroller Software – Configuration (PC) Software

Proof of Concept

Internal Components Solid Model

Internal Components - Exploded

CFD

Questions