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Interim Presentation

T
thusithagh

This document outlines a proposed driver sleepiness detection system. It discusses human sleep, the dangers of sleepy driving, and different methods for avoiding sleepy driving including awakening systems. The proposed system would use a sensor device on the steering wheel to monitor force and send data to a PC application, which would analyze the data using neural networks to detect if the driver is falling asleep and raise an alarm if needed. The system is intended as a concept that would not actually be tested in real vehicles.

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Driver Sleepiness Detection Interim Presentation Thusitha Hettige 2005/CS/051 05000513 Supervised By Dr. G. D. S. P. Wimalaratne
Road Map Human Sleep Sleepy Driving Sleepy Driving Avoidance Awakening Systems Proposed System Design Design of the Sensor Design of the PC End App Assumptions Testing and Evaluation Summary
Human Sleep All living animals and humans experiences A resting state of the body Sleep is important Consists of several stages
Sleepy Driving One of the deadliest combinations Lots of lives at risk Hazardous nature according to the facts Early warning signs
Sleepy Driving Avoidance Sleepy driving avoidance is important Categories of avoidance methods Behavioral Medical Shift work Awakening systems or alert devices
Awakening Systems A device or a system that can analyze the human sleepy behavior and alarm them Different measures Facial gestures Eye blink rate Pulse rate Heart beat rate etc.
Awakening Systems - Categories Readiness-to-perform and fitness-for-duty Mathematical models of alertness dynamics Vehicle-based performance measuring Lane tracking In-vehicle, on-line, operator status monitoring Hybrid alert devices
In-vehicle, On-line, Operator Status Monitoring Monitoring of physiological aspects Eg: brain waves, heart beat or pulse rate Monitoring ocular behavior or other physical behavior Eg: eye closure, blink rate, eye gaze facial reactions
System Design Sensor Device Part of the system which interacts with the user PC End Application Responsible for data gathering and decision making
Sensor Device Voltage regulator Power supplier Force sensor Analog signal generator Microcontroller Processing unit RS232 interface Communicator
Voltage Regulator 7805 regulator is the key component Works as a consistent 5V power supplier
Force Sensor Force Sensing Resistor(FSR) LM324 OpAmp works as the analog signal generator
Microcontroller Main processing unit of the sensor device Converts the analog signal to a digital signal PIC16F877A microcontroller
RS232 Interface Circuit Microcontroller alone cannot communicate with the serial port Need of voltage leveling up Key Component MAX232
Sensor Device Overall Voltage DC Current Regulator 5V 5V 5V RS232 Force Sensor Microcontroller Interface Analog Signal Digital Signal
PC End Application Data gathering from the sensor device and storing Waits until a positive value is returned from the sensor After getting waits another few amount of time Collect data for a specific amount of time as the initial force data
PC End App. Contd. Trains a neural network to categorize the driver Driver type and the later sensor data is used to train another neural network After training final NN decides the sleepy behavior If detected as falling asleep raises an alarm
Assumptions Not built to be used in real vehicles, merely a concept Force on the steering wheel always decrease when a person falling asleep No irregular behaviors among drivers
Testing and Evaluation System wont be tested in a real vehicle environment A model of a steering wheel will be used A number of people will be used for the testing phase
Summary Human Sleep, sleepy driving and avoidance Various types of awakening systems Proposed system design Assumptions Testing and Evaluation
Interim Presentation

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Interim Presentation

  • 1. Driver Sleepiness Detection Interim Presentation Thusitha Hettige 2005/CS/051 05000513 Supervised By Dr. G. D. S. P. Wimalaratne
  • 2. Road Map Human Sleep Sleepy Driving Sleepy Driving Avoidance Awakening Systems Proposed System Design Design of the Sensor Design of the PC End App Assumptions Testing and Evaluation Summary
  • 3. Human Sleep All living animals and humans experiences A resting state of the body Sleep is important Consists of several stages
  • 4. Sleepy Driving One of the deadliest combinations Lots of lives at risk Hazardous nature according to the facts Early warning signs
  • 5. Sleepy Driving Avoidance Sleepy driving avoidance is important Categories of avoidance methods Behavioral Medical Shift work Awakening systems or alert devices
  • 6. Awakening Systems A device or a system that can analyze the human sleepy behavior and alarm them Different measures Facial gestures Eye blink rate Pulse rate Heart beat rate etc.
  • 7. Awakening Systems - Categories Readiness-to-perform and fitness-for-duty Mathematical models of alertness dynamics Vehicle-based performance measuring Lane tracking In-vehicle, on-line, operator status monitoring Hybrid alert devices
  • 8. In-vehicle, On-line, Operator Status Monitoring Monitoring of physiological aspects Eg: brain waves, heart beat or pulse rate Monitoring ocular behavior or other physical behavior Eg: eye closure, blink rate, eye gaze facial reactions
  • 9. System Design Sensor Device Part of the system which interacts with the user PC End Application Responsible for data gathering and decision making
  • 10. Sensor Device Voltage regulator Power supplier Force sensor Analog signal generator Microcontroller Processing unit RS232 interface Communicator
  • 11. Voltage Regulator 7805 regulator is the key component Works as a consistent 5V power supplier
  • 12. Force Sensor Force Sensing Resistor(FSR) LM324 OpAmp works as the analog signal generator
  • 13. Microcontroller Main processing unit of the sensor device Converts the analog signal to a digital signal PIC16F877A microcontroller
  • 14. RS232 Interface Circuit Microcontroller alone cannot communicate with the serial port Need of voltage leveling up Key Component MAX232
  • 15. Sensor Device Overall Voltage DC Current Regulator 5V 5V 5V RS232 Force Sensor Microcontroller Interface Analog Signal Digital Signal
  • 16. PC End Application Data gathering from the sensor device and storing Waits until a positive value is returned from the sensor After getting waits another few amount of time Collect data for a specific amount of time as the initial force data
  • 17. PC End App. Contd. Trains a neural network to categorize the driver Driver type and the later sensor data is used to train another neural network After training final NN decides the sleepy behavior If detected as falling asleep raises an alarm
  • 18. Assumptions Not built to be used in real vehicles, merely a concept Force on the steering wheel always decrease when a person falling asleep No irregular behaviors among drivers
  • 19. Testing and Evaluation System wont be tested in a real vehicle environment A model of a steering wheel will be used A number of people will be used for the testing phase
  • 20. Summary Human Sleep, sleepy driving and avoidance Various types of awakening systems Proposed system design Assumptions Testing and Evaluation