TIU Tracking System SponsorIntel AdvisorProf. Robert Daasch TeamDaniel Ferguson Man Hoang Lynh Pham Tri Truong Dung Le Department of Electrical and Computer Engineering

Introduction Problem statement Key requirements  Size  Power  Accuracy

Agenda System Overview Hardware Firmware Software Deployment Results Conclusions

System Overview

Agenda System Overview Hardware Firmware Software Deployment Results Conclusions

Hardware Devices o Tag o Detector o Proxy Components o RF12 transceiver o ATmega328p MCU o WiFly b/g transceiver Schematic and layout by Eagle CAD PCB by Sunstone

Hardware Tag o RF12 transceiver o ATmega328p MCU o Size: 1” x 1” x 1” o 240mAh coin cell battery Product Layout

Hardware Detector o RF12 transceiver o ATmega328p MCU o Status LED o Size: 3.5” x 1” Product Layout

Hardware Proxy o RF12 transceiver o ATmega328p MCU o WiFly b/g transceiver o Breadboard prototype o Ceramic antenna

Agenda System Overview Hardware Firmware Software Deployment Results Conclusions

Firmware IMAGE

Firmware Tag o Mostly in low power state o Periodically wakes up to broadcast Detector o Listen for messages from tags and other detectors o Controlled flooding o Collision avoidance via time division Proxy o Listens for messages from detectors o Forwards messages to Controller Generally o All speak a common message format which includes  Battery Information  Infrastructure for a more sophisticated routing protocol  Fixed length

Agenda System Overview Hardware Firmware Software Deployment Results Conclusions

Software Controller o Collects data from Proxy o Feed data to Location Engine o Two operating modes  Calibrating  Collects RF signature at calibration points  Stores calibration data in a local database  Locating  Passes calibration data to Location Engine  Collects and sorts data into packets  Feeds the packets to Location Engine  Stores results in MySQL Database

Software Location Engine

Software Web App o Functionalities  Visualize tags’ and detectors’ locations  Add, modify, and remove tags and detectors  Configure the tracking area o Design Goals  Fast  Simple  Easy to use o Technologies  PHP  HTML5, CSS3, JavaScript o Why Web?

Agenda System Overview Hardware Firmware Software Deployment Results Conclusions

Deployment Detector placement Calibration density Each tag has a unique ID with respect to other tags Each detector has a unique ID with respect to other detectors Proxy possible configurations o Proxy must have access to LAN o Proxy must create an Ad-Hoc Access point for Controller to connect to

Deployment

Agenda System Overview Hardware Firmware Software Deployment Results Conclusions

Results Size: 1” x 1” x 1”

Results Power o 240mAh coin cell battery o 30mA transmit current o 40µA sleep current o 1sec broadcast interval o 3ms transmit window o 0.3% duty cycle

Results Accuracy o Average 2m o Less than 1m at calibration points

Agenda System Overview Hardware Firmware Software Deployment Results Conclusions

Antenna design More testing o Calibration density o Detector placement Improve testability Different algorithms Environment & signal strength

Acknowledgement Professor Robert Daasch Alfonso Pereira & Sameer Ruiwale

Demo