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Google Science Fair - HOV Positive

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Justin Leung

on 22 April 2013

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Transcript of Google Science Fair - HOV Positive

Problem: Engineering Goal Is it possible to detect the number of people within a vehicle to manage High Occupancy Vehicle Lanes? The purpose of this project is to create an interface that uses the integration of sound recognition to activate an infrared detection system. Issues in the HOV Lane Nationally, 10-15% of all High Occupancy Vehicle (HOV) lane users violate regulations, resulting in a deficit of one billion dollars a year in the state of Texas alone
Managing HOV lanes with current methods is costly and inefficient
The purpose of the HOV lanes cannot be fulfilled
Purposes of HOV lanes
Free up traffic
Reduce pollution
Increase in state revenue Procedure Collect sound samples from various cars at car dealerships Create device to automatically run the macro on a portable platform Create macro to activate the IR sensor whenever a sound sample is considered to be a "car door closing" to conserve energy Test the viability of different infrared sensors Analyze sound samples to generate a sound signature Thermopile vs Passive Infrared (PIR) Sensor Thermopile
Specifically measures the temperature of an object
Only works accurately at a distance of 2cm PIR Sensor
Determines if there is a significant change in temperature
Works up to a distance of 286 cm Microcontroller Acts as a processor for the device
Keeps device low powered
Allows for portability
Features UART ports for serial communication Circuit Diagram Conclusion A device was created to detect the number of people in a car
A trigger mechanism was created to activate an infrared detector to reduce energy consumption
The PIR sensor was optimized for usage in a car Business Aspects Only $15 compared to $200 with the new novel infrastructure
Will ideally use existing toll tag infrastructure to reduce setup costs.
The device only detects thermal movement, so a person cannot be identified
No human interaction with data except for support employees Future Applications Manage HOV lanes
Low powered security system
Collision preventative measure on vehicles
Monitoring on high risk medical patients
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