Thursday, June 2, 2011

CrazyEngineers Forum - Mechanical & Civil Engineering

CrazyEngineers Forum - Mechanical & Civil Engineering


New car technology can stop drunks from driving

Posted: 02 Jun 2011 01:06 PM PDT

Government officials have given a tentative thumbs up to a new technology for cars that would render the concept of driving while drunk a non-starter — literally.

On Friday, U.S. Transportation Secretary Ray LaHood and David Strickland, head of the National Highway Traffic Safety Administration, were on hand when researchers publicly demonstrated a car-embeddable sensor system that cleverly locks down the engine if it detects that the driver's blood alcohol level was above the legal limit.

Through the use of strategically placed sensors in places like the steering wheel and door locks, the North America Driver Alcohol Detection Systems for Safety, created by QinetiQ, a research facility in Waltham, Massachusetts, would analyze a driver's skin or breath to determine a driver's level of intoxication.

The system is being promoted as an alternative to alcohol ignition interlock systems that force drivers to blow into a breathalyzer type device before the car can be started. The cumbersome ignition systems are sometimes used by drivers as part of a DUI conviction.

After the demonstration, Strickland and LaHood gave a positive, yet cautious, assessment of the technology:

The technology is "another arrow in our automotive safety quiver," said LaHood, who emphasized the system was envisioned as optional equipment in future cars and voluntary for auto manufacturers.

David Strickland, head of the National Highway Traffic Safety Administration, also attended the demonstration and estimated the technology could prevent as many as 9,000 fatal alcohol-related crashes a year in the U.S., though he also acknowledged that it was still in its early testing stages and might not be commercially available for 8-10 years. (Associated Press)

And since the system will likely fall under the optional category for automakers, the technology must prove itself to be reliable enough to not mistakenly prevent the more sober folks from starting their cars to have any hope of being adopted by the masses.

The systems would not be employed unless they are "seamless, unobtrusive and unfailingly accurate," Strickland told the Associated Press.

A test showed that a 20-something year-old woman weighing 120 pounds had a blood alcohol content level of .06, just below the legal limit of .08, after drinking two 1 1/2 ounce glasses of vodka and orange juice about a half hour apart.

Even if the technology is perfected, it'll still be a tough sell. Freedom and the means to move about freely are cherished American values. So my guess is that there are very few people who would readily embrace the technology because of the off-chance that a slight malfunction would cause them to be late or, at worst, stuck somewhere.

But with an increasingly greater awareness of the dangers of drunk driving, the promise of such a system shows that technological solutions are in place should the tide turn.


Source: New car technology can stop drunks from driving | SmartPlanet

PVC pipes manufacturing.

Posted: 02 Jun 2011 07:09 AM PDT

Hi There,

I think the ease of production PVC plastic means that is easy to form sheets of any thickness and sizes. The PVC plastic sheets can be heat-formed, shaped and fabricated to make ducts, hoods, and much more depending on their intended use. The sheets can resist most chemicals though it is necessary to confirm the range of chemicals that can be withstood thus from the manufacturer.


Thanks lot advance
Damacio Huang

Mahindra GEO and Maruti 800 steering dimensions required

Posted: 02 Jun 2011 06:32 AM PDT

Friends,
I urgently require The steering mechanism dimensions for all parts of Mahindra GEO and Maruti 800.
Please, can you give me those? You can paste a link directing me to the dimensions page.

Thanking you in advance,
Ishan Topre

Create a turbine blade like part

Posted: 01 Jun 2011 08:52 PM PDT

You have to create this part in just three commands. If you have any other method feel free to share it.
Attached Files

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