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How Autonomous Vehicles Work

HOW AUTONOMOUS VEHICLES WORK
THE REQUIRED TECHNOLOGY


RADAR
Traditional RADAR sensors are used to detect dangerous objects in the vehicle’s path that are more
than 100 meters away.

OPTICS
Video cameras are used to identify road markings and traffic signals.

LIDAR
Laser RADAR scans the car’s surroundings in a 100 meter radius, letting the car know what objects to avoid.

GPS
A global positioning system keeps the car on its intended route with an accuracy of 30 centimeters.

PROCESSORS
Some 7 dual-core 2.13 GHz processors and 2Gb of RAM are needed to make sense of the data collected by the car’s instruments. Some cars run as many as 17 processors to disperse the computing load.


HOW LIDAR WORKS
1. The emitter sends out a laser beam.

2. The laser bean bounces off a mirror that is rotating along with the cylindrical housing, at 10 revolutions per
second.

3. After bouncing off objects the laser light returns to the mirror and is bounced back downward.

4. The light is focused onto a receiver where it can be interpreted into data.

5. The car can then generate a map of its surroundings and use the map to avoid objects.



HUMAN VS. COMPUTER
DISTANCE REQUIRED TO STOP

Legend
Reaction
Deceleration

A human takes about 2 seconds to react and press the brakes!

l0mph - 27ft
30mph ------- 109ft
60mph --------------304ft
90mph---------------------------584ft

A computer takes about .3 seconds to compute and apply the brakes.

10mph - 18ft
30mph -------- 53ft
60mph --------------1924ft
90mph---------------------------416ft

HARDWARE COMPARISON

The human eye sees details equivalent to
576 Megapixels

The finest digital camera sensors today are around
50 Megapixels

All the microchips on Earth combined execute about
6.4 x 10 -18 calculations every second

That’s roughly equal to one human brain


TIME TO PREPARE

There have been a myriad of predictions as to when we will see the first autonomous vehicles on our roads.

GENERAL MOTORS - 2018
U.S. DEPT OF TRANSPORTATION - 2020
SEBESTIEN THRUN STANFORD - 2030
FORESIGHT - 2056
ROYAL ACADEMY OF ENGINEERING - 2019
VOLVO - 2020
DENNIS BUSHNELL - 2020
FREE UNIVERSITY BERLIN - 2040

2010 2020 2030 2040 2050 2060

How Autonomous Vehicles Work

shared by Rsammy on Oct 24, 2011 in Transportation

How Autonomous Vehicles Work

shared by Rsammy on Oct 24, 2011 in Transportation

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The visualization displays the aspects required to create and deploy autonomous vehicles. It's also explains how modern technology is used to make theses vehicles function.
Rank: 78 of 2917 in Transportation

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