On Fri, 2 Feb 2001 02:41:01 -0800, you wrote:
As the times involved are somewhat short, an alternative to using a
very fast clock to time the delay is to use an analogue method, e.g.
using the received signal to gate the charging of a capacitor, giving
a voltage proportional to the delay.
There is another method that can be used for measuring shorter
distances - fire the laser at an angle, and use a lens & linear CCD to
determine the distance by looking at the linear position of the spot.
This method is used for ride-height sensing in motor racing.
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics
In reply to: <firstname.lastname@example.org>
See also: www.piclist.com/techref/index.htm?key=laers+again
You must be a member of the
piclist mailing list
(not only a www.piclist.com member) to post to the