Presentation on theme: "By Carl Tenenbaum David Haynes Philip Pham Rachel Wakim."— Presentation transcript:
By Carl Tenenbaum David Haynes Philip Pham Rachel Wakim
History of Driver Safety 1930s- Seat Belt first introduced Safety Cage and Padded Dashboard National Transportation Safety Board Child’s Booster Seat Car Crash Testing Airbag Introduced NY Enforced Seat Belt Use Rollover Risk Test
Causes of Car Accidents 1. Distracted Drivers (12% was Driver Fatigue) 2. Driver Fatigue 3. Drunk Driving 4. Speeding 5. Aggressive Driving 6. Weather * According to Sixwise.com
Driver Fatigue Results The National Highway Traffic Safety Administration Yearly Statistics 100,000 police-reported crashes 1,550 deaths 71,000 injuries $12.5 billion in monetary losses. It is difficult to attribute crashes to sleepiness
To be attractive, a vehicle sensor system should be: Fairly inexpensive, Accurate, with a quick response time, Integrated with the car design, or at least “plug and play”, Noninvasive, Discreet, and non-distracting, Adaptable to different user conditions: i.e., sunglasses, gloves.
Head Position Detection Sense changes in Head Position Tilt Gives off a warning if the Head Tilt is facing a downward angle. Does Not detect head backwards or turned. Head Position Down is the Last Stage of Sleep Onset. Usually too late and no warning to Driver.
Reed Switch Device
Voice Detection Sense changes in Discrete Voice Parameters such as pitch, frequency, latency and amplitude. A complex detection algorithm compares normal voice to sample of potential fatigued voice Can be integrated in GPS or command oriented car systems
Types of Voice Sounds Voiced Nasal Fricative Plosive (Easiest to detect Fatigue)
Behavioral Detection Sense Erratic Driving Behavior Stores Profile of Person’s Driving Behavior Compares Profile such as Driver’s Steering and Braking Reaction Time
Steering Angle Sensors Use Mechanical (potentiometers) or Optical (contact-free) technologies to collect data or apply correction Mount on steering shafts Cover up to 1080 o (3x steering wheel rotations) Angle resolution of 0.1 o
Lane Departure Warning Use video, laser, and infrared to monitor the lane markings Activate Vehicle Stability Control (Infiniti), Electric Power Steering (Lexus), etc. to maintain lane position
Driving Behavior (Steering Angle)
Driving Behavior (Gas Pedal)
Driving Behavior (Center Lane Distance)
Current Behavioral Sensors Mercedes E-Class, Volvo, Lexus, Nissan, Infiniti, Volkswagen Aftermarket- 3Q(2011) AudioVox ($600) *Daimler Chrysler Website
Optical Detection A camera or system of cameras monitor the driver’s facial features for signs of drowsiness. Computer algorithms analyze blink rate and duration. Infrared LEDs are used to enhance pupil detection. Yawning and sudden head nods are also detected.
Head/eye Camera Measure head tilting/eye closing/yawning as signs of fatigue or drowsiness. Non-invasive, no need for user interface. Can be thwarted by sunglasses or hats. Driver movement may confuse the camera. 1/5 people do not show eye closure as a warning sign. [US Dept. of Transportation]
Pupil Detection on Grayscale Image
Facial Feature Detection
Possible Camera Locations
Current Optical Systems Nap Alarm (LS888) DD850 Driver Fatigue Monitor
Biometric Detection EKG and EEG Blood pressure Skin conductivity (“GSR” – Galvanic Skin Response) Skin temperature Breathing rate Grip force All shown with correlation to relative drowsiness
Electrocardiogram (EKG) Get information about user’s heart rhythm from at least two electrical contacts on skin. By removing common mode noise and amplifying the signal, a system can “read” the user’s heart rate, the distance between successive “R” peaks Drowsiness has been shown to be linked to decreasing heart activity and changes in heart rate variability (HRV)
Minimum EKG System As long as there are at least two contact points, sensor should be able to extract and isolate the signal Can put these on wheel, seat, or both
Wheel sensor Use sensors on steering wheel to measure skin temperature and conductivity, pulse, etc. Estimate heart rate variability – can detect drowsiness. Combines many different metrics to get an overall assessment of the user’s state. Requires use of both hands, without gloves.
Seat sensor Two pieces of conductive fabric on the driver’s seat (backrest) can take an ECG - measurement. Or on bottom of seat, with wheel as ground (only needs one hand) Needs impedance compensation for the driver’s shirt/coat, etc.
Electroencephalogram (EEG) Use multiple electrodes on scalp to read brain waves Can very accurately determine sleep/drowsiness stage this way by measuring amplitude/frequency variation of signal BUT, very invasive
Other Possible Sensor Locations Blood pressure finger cuff on front seat EKG contacts on left or right armrests EKG sensors on shifter Etc. Or any combination of these. Theory: the more bio-signs, the better!
Wireless wrist monitor Wristwatch capable of detecting heart rate, skin temperature and conductance. Example: “Exmovere Empath Watch”: Transmits via Bluetooth to phone which can signal out; easily extended to cars, many of which already are Bluetooth compatible. Current design is 3.3” long, 1.7” wide, and 1.3” tall. Can be bulky, and may not be appealing enough; currently being remodeled [http://www.exmovere.com/healthcare.html]
Current Biometric Detection Systems Currently, there are no systems of these types in commercial use They all display a high level of accuracy, but their weak point is their invasiveness and unattractiveness With future work, some of these can be integrated in a behind-the-scenes manner during manufacturing
Fuzzy Logic Detection More Uncorrelated Sensors Detecting Driver Fatigue Will Increase Detection Probability
Corrective and Prevention Actions 1. Elevated Alarms a) Provide Visual Alarm (lights, signs, etc.) b) Provide Audio Alarm (warning tone or voice) c) Recommend short nap (prevent car to start; studies show 15-minute nap increases alertness to 4-5 hours more) 2. Mechanical and Electronic Stimulations a) Counteract to the effects (steering wheel turn, lane drifting, speed change, etc.) b) Apply brake to slow down to safety c) Dispatch for help if no response
Corrective Flowchart Actions
Current Driver Fatigue Products ProductsPriceAccurate Non- InvasiveEffective Overall ScoreCompanyDetection Type Driver Nap Zapper2550%335No NapMotion Nap Alarm (LS888) 50080%566 Leisure Auto SecurityOptical DD850 Driver Fatigue Monitor50080%566Eye AlertOptical Exmovere Empath WristWatch100090%656ExmovereBiometric Driver Assist Package300090%777MercedesBehavioral Undeveloped Market. US Consumer Car GPS Market is $5.1 Billion Market in 2010.
Limitations and Future Work Limitations Probability of Detection Lack of Effective and Timely Alerts Integration of Sensors Future Work Increase Probability of Detection Use of Multiple Sensors to Increase Probability Develop Effective and Timely Alerts
References  “The 6 Most Common Causes of Automobile Crashes(2010)”. Retrieved February 9 th 2011, from tm tm  K. Strohl, J. Blatt, F. Council, K. Georges, J. Kiley, R. Kurrus, A. McCartt, S. Merritt, R.N, A. Pack, S. Rogus, T. Roth, J. Stutts, P. Waller, and D. Willis, “Drowsy Driving and Automobile Crashes” (2010), Retrieved February 21 st 2011, from  What causes Fatigue (2010), Retrieved February 21 st 2011, from  H. Greeley, E. Friets,, J. Wilson, S. Raghavan and J. Berg, “Detecting Fatigue From Voice Using Speech Recognition”, 2006 IEEE International Symposium on Signal Processing and Information Technology  D. Hu, G. Gong, C. Han, Z. Mu, and X. Zhao, “Modeling research on Driver Fatigue”, 2010 International Conference on Computer Application and System Modeling (ICCASM 2010) L. Bergasa, J. Nuevo, M. Sotelo, R. Barea, and M. Lopez, “Real-Time System for Monitoring Driver Vigilance”, IEEE Transactions on Intelligent Transportation Systems, Vol. 7, no. 1, March 2006  Z. Zhu, Q. Ji, K. Fujimura, and K. Lee, “Combining Kalman Filtering and Mean Shift for Real Time Eye Tracking Under Active IR Illumination”, International Conference on Pattern Recognition, Quebec, Canada, 2002  US Department of Transportation, “An Evaluation of Emerging Driver Fatigue Detection Measures and Technologies”, June 2009  Haisong Gu, Qiang Ji, and Zhiwei Zhu, “Active Facial Tracking for Fatigue Detection” IEEE Workshop on Applications of Computer Vision, Orlando, Florida, Y. Jie, Y. DaQuan, W. WeiNa, X. XiaoXia, and W. Hui, “Real-Time Detecting System of the Driver’s Fatigue”, 2006 L. Bergasa, J. Nuevo, M. Sotelo, R. Barea, and M. Lopez, “Real-Time System for Monitoring Driver Vigilance”, IEEE Transactions on Intelligent Transportation Systems, vol. 7, no. 1, March, 2006
References (Continued)  S. Deshmukh, D. Radake, K. Hande, “Driver Fatigue Detection Using Sensor Network”, International Journal of Engineering Science and Technology, NCICT Conference Special Issue, pp 89-92, February 2011  Y. Tanida, H. Hagiwara, “Simple Estimation of the Falling Asleep Period using the Lorenz Plot for Heart Rate Interval”, JSMBE vol. 44, no. 1, pp , Nov  S. Kar, M. Bhagat, and A. Routray, “EEG signal analysis for the assessment and quantification of driver’s fatigue”, June 2010  L. Servera, M. Fernandez-Chimeno, and M. González, “Study of Sleep Stages By Controlled Inducement and Measurement of Drowsiness Related Biomedical Signals”, 4th International IEEE EMBS Conference on Neural Engineering, April 2009 P. Kithil, R. Jones, and J. MacCuish, “Development of Driver Alertness Detection System Using Overhead Capacitive Sensor Array”, International Driving Symposium on Human Factors in Driver Assessment, Training and Vehicle Design, Aspen, CO, X. Yu, “Real-time Nonintrusive Detection of Driver Drowsiness”, May 2009  G. Yang, Y. Lin, and P. Bhattacharya, "A driver fatigue recognition model using fusion of multiple features" Systems, Man and Cybernetics, 2005 IEEE International Conference on, vol.2, no., pp Vol. 2, Oct The John Hopkins university Applied Physics Laboratory “Technologies: Drowsy Driver Detection System” T. Matsuda and M.Makikawa, “ ECG Monitoring of a Car Driver Using Capacitively-Coupled Electrodes”, 30th Annual International IEEE EMBS Conference,Vancouver, British Columbia, Canada, August 2008 Y. Lin, H. Leng, G. Yang, and H. Cai, “An intelligent noninvasive sensor for driver pulse wave measurement,” IEEE Sensors J., vol. 7, no. 5, pp. 790–799, May  M. Bundele, and R. Banerjee, “Design of Early Fatigue Detection Elements of a Wearable Computing System for the Prevention of Road Accidents”, IEEE,International Society of Automation, Vol 1, pp , 2010
References (Continued) I. Jeong, S. Jun, D. Lee and H. Yoon, “Development of Bio Signal Measurement System for Vehicles”, 2007 International Conference on Convergence Information Technology Exmovere Holdings Inc, “The New Biotechnological Frontier: The Empath Watch”. Feb  Frost & Sullivan’s, North American GPS Equipment Markets, 2010 (Report A601-22)