University of Massachusetts Senior Design Project - Final Design Review Team REES 04/16/2014 By Team REES (Hantz Alvarez, Liyan Tang, Joel Fogue, Pablo Alvarez)

Original PDR Specifications Real-Time counter for the number of people entering and exiting each room in a building Account for the difference between a person entering and exiting Reasonably accurate Calculate evacuation route in case of an emergency Account for possible traffic flow Arrows displaying guided path to nearest emergency exit

Adjusted Specifications Real-Time counter for the number of people entering and exiting each room in a building Detects direction of motion, whether entering or exiting the room Reasonably accurate Detecting people in single file rather than simultaneously Can only count one person at a time Two people can’t walk in and out at the same time Should only take about 1 to 2 seconds max to walk through the door

Power Consumption External Power Source – 12V Components Arduino + Wifi shield 200mA-800mA Grid Eye Sensor – 3.3V, 10uA Wireless Shield - ~300mA

Component Price Arduino Uno Single Board Microcontroller $27.95 Arduino Wireless Shield $ VDC 1000mA Adapter $8.95 Panasonic Grid Eye IR Sensor(Breakout) $39.21($75.14)

Block Diagram