Showing posts with label car. Show all posts
Showing posts with label car. Show all posts

Saturday, May 12, 2012

Google’s autonomous car gets licensed

Driver-less cars will soon be a reality on the roads of Nevada after the state approved America’s first self-driven vehicle license.

The Nevada Department of Motor Vehicles has issued the first license plates that will allow Google’s autonomous cars onto public highways. The first to hit the highway will be a Toyota Prius modified by search firm Google, which is leading the way in driver-less car technology.

Nevada is the first state to devise licensing procedures for autonomous vehicles, and Google is the one of the leaders in that field, having hired some of the top talent that took part in the DARPA Grand and Urban Challenges. Google‘s fleet will have red Nevada license plates with a Greek infinity symbol, intended to alert other drivers that a computer has control of the vehicle.

Google’s Driver-less Car

The car uses video cameras mounted on the roof, radar sensors and a laser range finder to “see” other traffic. Engineers at Google have previously tested the car on the streets of California, including crossing San Francisco’s Golden Gate bridge.  For those tests, the car remained manned at all times by a trained driver ready to take control if the software failed. According to software engineer Sebastian Thrun, the car has covered 140,000 miles with no accidents, other than a bump at traffic lights from a car behind.

This is what the car sees while navigating through the roads.

Bruce Breslow, director of Nevada’s Department of Motor Vehicles, says he believes driver-less vehicles are the “cars of the future“. Nevada changed its laws to allow self-driven cars in March. The long-term plan is to license members of the public to drive such cars. Google’s car has been issued with a red license plate to make it recognizable. The plate features an infinity sign next to the number 001. Other states, including California, are planning similar changes.

“The vast majority of vehicle accidents are due to human error,” said California state Senator Alex Padilla, when he introduced the legislation.

“Through the use of computers, sensors and other systems, an autonomous vehicle is capable of analyzing the driving environment more quickly and operating the vehicle more safely.”

Handout photo of the Google self-driven car in Las Vegas.


Blowfish12@2012 Author: Sudharsun. P. R.

Sunday, May 6, 2012

A Battery Breakthrough That Could Bring Electric Cars To The Masses

Car technology

A startup called Envia Systems, working on battery technology says it’s developed a key breakthrough technology that could one day lead to an electric car that has a 300-mile range and could cost around $25,000 to $30,000. Envia Systems announced test results that verify the company’s next-generation rechargeable battery has achieved the highest recorded energy density of 400 Watt-hours/kilogram (Wh/kg) for a rechargeable lithium-ion cell.

400whkg-battery-pic-2_img_1028
When commercialized,this 400 Wh/kg battery is expected to slash the price of a 300­mile range electric vehicle by cutting the cost of the battery pack by more than 50 percent.

Energy density is how much energy a battery can store and provide for the car with a given battery size — the more energy dense the battery, the less volume and weight is needed. For electric cars it is particularly important to have a high energy dense battery because electric cars need to be as light weight as possible (any extra weight just drains the battery faster), and batteries that are smaller and use less materials can also be lower in cost.

“Since the inception of Envia, our product team has worked tirelessly and logged over 25 million test channel hours to optimally develop each of the active components of the battery: Envia’s proprietary SiC anode, HCMR cathode and EHV electrolyte,” said Dr.Sujeet Kumar, Envia Systems co-founder, president & CTO. “Rather than just a proof-of-concept of energy density, I am pleased that our team was successful in actually delivering 00 Wh/kg automotive grade 45 Ah lithium-ion rechargeable cells.”

A battery breakthrough that could bring electric cars to the masses


Blowfish12@2012 Author: Sudharsun. P. R. Reference: techpark.net  enviasystems.com

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