25-10-2016, 03:27 PM
1461139278-googleselfdrivingcar150503115845conversiongate02.pptx (Size: 7.98 MB / Downloads: 5)
Technology
Google's robotic cars have about $150,000 in equipment including a $70,000 LIDAR system. The range finder mounted on the top is a Velodyne 64-beam laser.
This laser allows the vehicle to generate a detailed 3D map of its environment. The car then takes these generated maps and combines them with high-resolution maps of the world, producing different types of data models that allow it to drive itself.
As of June 2014, the system works with a very high definition inch-precision map of the area the vehicle is expected to use, including how high the traffic lights are.
What is it?
It is the first truly driverless electric car prototype built by Google to test the next stage of its five-year-old self-driving car project.
It looks like a cross between a Smart car and a Nissan Micra, with two seats and room enough for a small amount of luggage.
It is the first real physical incarnation of Google’s vision of what a self-driving car of the near future could be.
How does it work?
Powered by an electric motor with around a 100 mile range, the car uses a combination of sensors and software to locate itself in the real world combined with highly accurate digital maps.
A GPS is used, just like the satellite navigation systems in most cars, to get a rough location of the car, at which point radar, lasers and cameras take over to monitor the world around the car, 360-degrees.
The software can recognise objects, people, cars, road marking, signs and traffic lights, obeying the rules of the road and allowing for multiple unpredictable hazards, including cyclists. It can even detect road works and safely navigate around them
Radar sensors
Four standard automative radar sensors, three in front and one in the rear which helps in determining the position of distant objects.
Ultrasonic sensors
It is used to measure the position of objects very close to the vehicle, such as curbs and other vehicles when parking.
Orientation sensors
Similar to the way a person’s inner ear gives them a sense of motion and balance, this sensor located in the interior of the car works to give the car a sense of orientation.
How safe is it?
The car itself is limited to 25 mph, which restricts it to certain roads, but also minimises the kinetic energy it could carry into a crash if one should happen.
The front of the car is also made to be as kind to pedestrians as possible with a foam bumper and a flexible windscreen that is designed to absorb energy from an impact with a person’s body.
limitations
If the vehicle is using internet which is having less security then from the hackers point of view in some cases the vehicle can be switched off on the road(in rare cases)
Hackers can change the route which is plotted in the system(in rare cases)
In case of failure of main sensor and backup sensors the vehicle can create a chance of accident
Conclusion
The driver less car’s technologies improves vehicle's stability helps to minimize loss of control.
Driver less cars are designed to minimize accidents by addressing the main causes of collisions: driving error, distraction and drowsiness.