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Published byBlanca Lockwood Modified over 9 years ago
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2011- Vermont Technical College Electro-Mechanical Senior Project Networked Advanced Vehicle Anti-Tamper & Alert System Tim Quinn, Jacques Dupuis, Henry Mossell
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Background Problem Statement Solution Statement Array Placement Concept System Overview Sensors Evaluated
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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
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Check Feasibility for Different Sensors Discrete Package Robust Water Proof Easy to Replace Sensitivity 5 Volt Max current 0.577 A Detection is directly under the Vehicle
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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.
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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
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Sensor 5 Volt Water Proof Robust Easy to Replace DiscreteSensitivity PIRXXXXXX Ultra-SonicXXXXX Pitot TubeXX Ping Pong Gust Detector XX PIR Maxbotix LV-EZ0 Pitot Tube Pressure Sensor Freescale MXP2010 Gust detector using a ping- pong ball and optical sensor
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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
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PartsTypeCosts SensorsPIR$30.00 Ultrasonic$26.00 Keller Pressure$151.00 Freescale Pressure$5.24 Housing6061 Aluminum Stock$50.00 O-Ring Seal$10.00 Rare Earth Magnet$10.00 Linear Solenoid$31.00 $101.00 Labor252 hours ($100/hr)$25,200.00 Total Parts and LaborPIR$25,331.00 Ultrasonic$25,327.00 Keller Pressure$25,452.00 Freescale Pressure$25,306.24
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