2011- vermont technical college electro-mechanical senior project networked advanced vehicle...
TRANSCRIPT
2011- Vermont Technical College Electro-Mechanical Senior Project
Threat Verification- NAVATASensor Selection and Mechanical Design
Networked Advanced Vehicle Anti-Tamper & Alert System
Tim Quinn, Jacques Dupuis, Henry Mossell
Table of Contents
BackgroundProblem StatementSolution StatementArray Placement ConceptSystem OverviewSensors Evaluated
Background
Deployed Vehicles Unattended Vehicles tampered with unattended A vibration sensor is currently employed Wide open spaces and wind gust Not immune to vibrations due to wind False alarms Determine an actual threat from wind gusts
Problem Statement
Check Feasibility for Different Sensors
Discrete PackageRobustWater ProofEasy to ReplaceSensitivity5 VoltMax current 0.577 ADetection is directly under the
Vehicle
Solution Statement
To design a system that uses a Passive Infrared Sensors to detect a real threat to the vehicle.
An array of PIRs shall be mounted in the under carriage to create a detection envelope directly under the vehicle.
The sensors will only be deployed when the alarm is activated.
Sensor Array Concept
System Overview
Person crawls under vehicle to tamper with it
PIR detects persons movement under vehicle
Send threat verification signal to the CAN-Bus
Threat is detected
Sensor Evaluation
Sensor 5 Volt
Water Proof
Robust
Easy to Replace Discrete Sensitiv
ity
PIR X X X X X X
Ultra-Sonic X X X X X
Pitot Tube X X
Ping Pong Gust Detector X X
PIRMaxbotix LV-EZ0
Pitot Tube Pressure Sensor
Freescale MXP2010
Gust detector using a ping- pong ball and optical
sensor
Housing Design
6061 machined Aluminum housing Rubber O-ring seals for cover and side
door 5V mini linear actuator 30mm stroke PCB boards mounted on either side of
actuator Actuator extends PIR into open view
when vehicle is shut off and armed with NAVATA system
Schedule
Cost of Engineering and Design
Parts Type CostsSensors PIR $30.00
Ultrasonic $26.00 Keller Pressure $151.00 Freescale Pressure $5.24
Housing 6061 Aluminum Stock $50.00 O-Ring Seal $10.00 Rare Earth Magnet $10.00 Linear Solenoid $31.00 $101.00
Labor 252 hours ($100/hr) $25,200.00
Total Parts and Labor PIR $25,331.00 Ultrasonic $25,327.00 Keller Pressure $25,452.00 Freescale Pressure $25,306.24
Thank you
Questions?