no cars are not radio controlledAre cars radio controlled? If so car A not only needs to calc. range but direction as well-remotely. Sounds like war games. Irradiate target with IR and detect with a series of IR detectors for direction?? Also what is speed of sound at your location ??
Yes, I mentioned it in post #3 of this thread, but you rejected the idea as it was not continuous enough for your purpose, as I recall.any one know about 'stanley fatmax tlm100' the product is really amazing itmeasures upto 30 meter with 6mm accuracy
any one knows how it works
and it is cheap toooo
...i didn't rejected itYes, I mentioned it in post #3 of this thread, but you rejected the idea as it was not continuous enough for your purpose, as I recall.
I have one, works great, got it new for <$50 USD, and it is TOF.
John
Sorry, my post must not have been clear. It is laser based.how they are able to do it so cheaply and do you know how it works so precisely with only 1/4 inch accuracy is it using sound or laser or something else
do you know how it works if yes plz explain itSorry, my post must not have been clear. It is laser based.
John
1 what is the response time of stanley between two different measurementIt's Time of Flight (TOF). Bernard (post#7) gives a block diagram for a sound-based TOF. The details of the Stanley design are not publically available; although, personal contact with Stanley confirmed that it operates by TOF, rather than by some other principle, such as triangulation or interference lines.
It is a class IIIa laser (<5 mW) at 630 to 690 nm. The pulse length is listed on the tool as being 1 nS (i.e., a pulse of light 30-cm long ).
John
thankyou for ur supportEven better: www.maxbolix.com "Range objects 0-6.45 meters." Various beam widths available.
Some ramblings: If the US[ultra sonic unit] were rotated at about one, rps;when an object is detected ,rotation stops and sweep comences covering 15-30 dergees either side of stop position.Center of sweep moves to track target.