Re: QUESTION: New idea for truck scales


"BD" <bobby_dread@xxxxxxxxxxx> wrote in message
news:1136481640.414008.123190@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hey, all.
>
> I was driving along the highway recently, and passed one of those big
> truck scale stations. I was thinking about how long it must take for a
> big truck to be weighed, and I suddenly had an idea of how to speed up
> the process. I've thought about it, and I think that it's viable, if
> only in principle. I'd like to fire off my idea to the group and see
> what you all think.
> Picture, instead of a scale that weighs the mass of each axis and
> calculates an average, a massive steel plate that runs for about a
> hundred feet. The plate is set on top of a group of sensors, which can
> _very_ accurately detect movement in this plate.
>
> So the truck comes through the station, and instead of stopping, simply
> slams on the brakes for a split second as it passes over this plate.
> The plate moves in response to the truck putting on its brakes, and a
> calculation is done to find the weight required to move the plate the
> distance that it actually moved.
>
> Now - a large vehicle just 'tapping' its brakes might cause the plate
> to move the same amount as a smaller vehicle slamming on its brakes
> really hard. So some system of lasers would be used to calculate the
> delta-v of the vehicle as it passes over the plate.
>
> So what I envision is a system where a vehicle passes over this plate,
> pops his brakes, and just cruises along!
>
> Comments? Does this have any viability at all?
>
> BD
None whatsover.
The primary purpose of the weigh station is safety, I want
a guarantee that the 40 tons of scrap iron hidden in the enclosed
trailer is evenly distributed or placed hard up against the forward
bulkhead so that when the truck driver slams on his brakes
in an emergency it doesn't come sliding forward and crush
his cab according the Newton's 1st law:
Every body perseveres in its state of rest, or of uniform motion in a right
line, unless it is compelled to change that state by forces impressed
thereon.

He doesn't want to be providing that force to stop it.
Remember that he does not always have the keys to
the trailer, he only hauls it and doesn't always know what it
contains. It may be 10 tonnes of battery acid being illegally
dumped, the driver is not always aware and must trust his
manifest. He cannot open crates, he has a business to run.
A customs inspector can if he isn't satisfied with what is
written on the manifest or suspicious in any way.
Axle by axle, preferably tyre by tyre with visual inspection
and tyre pressure check please, weigh stations help protect
you and the driver from unscrupulous rogues smuggling
and hijacking.
Der alte Hexenmeister.


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