Challa veena madhuri_adaptive cruise control
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Adaptive cruise control is a control mechanism that can automatically detect the ongoing traffic and adjust the car’s speed to maintain safe following distance from the cars ahead. This Adaptive cruise control system adapts the speed of the vehicle to flow of traffic. It uses forward looking sensor as a RADAR, installed behind the grill of a vehicle to detect the vehicle’s speed and distance ahead of it. Driver obtain safety with the preceding vehicle by using ACC.
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Challa veena madhuri_adaptive cruise control
- 1. Veena Madhuri Challa Chemnitz University of Technology Automotive Software Engineering Third Semester Adaptive Cruise Control Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun
- 2. 2 • Introduction • Principle and Operation • Block diagram • Sensors • Advantages • Conclusion • References Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun Adaptive Cruise Control CONTENTS
- 3. 3 INTRODUCTION Adaptive cruise control that can automatically adjust a car‘s speed and to maintain a safe following distance. Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun Adaptive Cruise Control
- 4. 4 PRINCIPLE AND OPERATION OF ACC • Works by detecting the distance and Speed of vehicles ahead by radar sensor. • Time taken to transmit and receive is the key principle for distance measurement. • Speed can measured by frequency of the reflected beam by doppler effectWorks. Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun Adaptive Cruise Control
- 5. 5 BLOCK DIAGRAM OF ACC Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun Adaptive Cruise Control
- 6. 6 Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun SENSORS USED IN ACC • RADAR • LASER • Vision Based Sensor Adaptive Cruise Control
- 7. 7 INTRODUCTION OF RADAR Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun •Radio Detection and Ranging. •Waves are generated, transmitted, reflected and detected. •Unimpaired by night, fog, clouds and smoke. Adaptive Cruise Control
- 8. 8 PRINCIPLE OF OPERATION Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun Transmitter Receiver Antenna Target Transmitted Wave Reflected Wave Adaptive Cruise Control
- 9. 9 PRINCIPLE OF MEASUREMENT Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun 1. Distance Determination R = c Tr /2 where, R is range of the target, C is velocity of light, Tr is round trip time. Adaptive Cruise Control
- 10. 10 Adaptive Cruise Control Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun 2. Pulse Repetition Frequency PRT = 1/PRF
- 11. 11 Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun 3. Maximum unambiguous range Adaptive Cruise Control
- 12. 12 Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun 4. Doppler Shift •Speed measurement Adaptive Cruise Control
- 13. 13 Adaptive Cruise Control Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun Received Power Transmitted Power Transmitter Gain Antenna Aperture Target Cross Section Propagation Factor Target Distance 5. Radar Equation
- 14. 14 Basic Radar Types Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun •Pulse Modulation •Continuous wave Adaptive Cruise Control
- 15. 15 Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun PULSE VS CONTINUOUS WAVE RADAR Pulse RADAR Continuous wave RADAR Adaptive Cruise Control
- 16. 16 Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun BLOCK DIAGRAM OF PULSE RADAR Adaptive Cruise Control
- 17. 17 ADVANTAGES OF ACC Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun • Fuel Efficiency of the vehicle is increased. • Its very useful for long driving. • It prevents accidents. • Wide range of environmental conditions (dirt, fog, rain, ice, darkness). Adaptive Cruise Control
- 18. 18 CONCLUSION • ACC system was developed for the purposes of driving safety and comfort. • It reduces the number of brake and switch operations that are required to the driver. • As a result, the system reduces the driving burden so that the driver can drive in comfort. Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun Adaptive Cruise Control
- 19. 19 REFERENCES •INTRODUCTION TO RADAR SYSTEMS Second Edition by Merrill I. Skolnik,1981 •Radar Systems by PAUL A . LYNN •http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6153935 • http://www.engineersgarage.com/articles/what-is-radar-technology? page=2 •http://www.radartutorial.eu/01.basics/rb01.en.html •http://users.ece.gatech.edu/mrichard/Ch1_FRSP2e.pdf •http://www.delphi.com/manufacturers/auto/safety/active/adaptive-cruise- control Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun Adaptive Cruise Control
- 20. 20 THANK YOU Seminar Automotive Sensors Chair for Measurement and Sensor Technology Univ.-Prof. Dr.-Ing. O. Kanoun