05-09-2012, 11:51 AM
Automatic Cruise Control
Automatic Cruise.ppt (Size: 1.59 MB / Downloads: 35)
Motivation
Everyday the media brings us the horrible news on road accidents. Once a report said that the damaged property and other costs may equal 3 % of the world’s gross domestic product.
Introduction
What Is Cruise Control?
Cruise Control is a system which is capable of maintaining the speed of a car at a desired level.
What Is Adaptive Cruise Control Systems?
Adaptive Cruise Control (ACC) technology automatically adjust the vehicle speed and distance to that of a target vehicle.
Types
LIDAR (Light Detection and Ranging)
Lidar is an optical remote sensing technology that measures properties of scattered light to find range and/or other information of a distant target. The prevalent method to determine distance to an object or surface is to use laser pulses. Like the similar radar technology, which uses radio waves instead of light, the range to an object is determined by measuring the time delay between transmission of a pulse and detection of the reflected signal. LIDAR The first acc system introduced by Toyota used
this method. By measuring the beat frequency difference between a Frequency Modulated Continuous light Wave (FMCW) and its reflection.
RADAR (Radio Detection and Ranging):
RADAR is an electromagnetic system for the detection and location of reflecting objects like air crafts, ships, space crafts or vehicles. It is operated by radiating energy into space and detecting the echo signal reflected from an object (target) the reflected energy is not only indicative of the presence but on comparison with the transmitted signal, other information of the target can be obtained. The currently used ‘Pulse
Doppler RADAR’ uses the principle of ‘Doppler effect’ in determining the velocity of the target.
Automatic Cruise.ppt (Size: 1.59 MB / Downloads: 35)
Motivation
Everyday the media brings us the horrible news on road accidents. Once a report said that the damaged property and other costs may equal 3 % of the world’s gross domestic product.
Introduction
What Is Cruise Control?
Cruise Control is a system which is capable of maintaining the speed of a car at a desired level.
What Is Adaptive Cruise Control Systems?
Adaptive Cruise Control (ACC) technology automatically adjust the vehicle speed and distance to that of a target vehicle.
Types
LIDAR (Light Detection and Ranging)
Lidar is an optical remote sensing technology that measures properties of scattered light to find range and/or other information of a distant target. The prevalent method to determine distance to an object or surface is to use laser pulses. Like the similar radar technology, which uses radio waves instead of light, the range to an object is determined by measuring the time delay between transmission of a pulse and detection of the reflected signal. LIDAR The first acc system introduced by Toyota used
this method. By measuring the beat frequency difference between a Frequency Modulated Continuous light Wave (FMCW) and its reflection.
RADAR (Radio Detection and Ranging):
RADAR is an electromagnetic system for the detection and location of reflecting objects like air crafts, ships, space crafts or vehicles. It is operated by radiating energy into space and detecting the echo signal reflected from an object (target) the reflected energy is not only indicative of the presence but on comparison with the transmitted signal, other information of the target can be obtained. The currently used ‘Pulse
Doppler RADAR’ uses the principle of ‘Doppler effect’ in determining the velocity of the target.