Quote:
Originally Posted by windell747
Although this might be overly complex, something out of the box would be to create some sort of velocimeter that bounces sound off the ground and measures the change in reflected frequency due to the sound doppler shift. Ocean current profilers work in this fashion. Of course an encoder can accomplish the same thing, in a similar fashion, but just wanted to throw the idea out there.
I like the idea brought up earlier about monitoring the motor's current to detect a drop in load due to the transition from static to kinetic friction.
|
http://cigr-ejournal.tamu.edu/submis...2001%20007.pdf
Ocean current profilers are called sounders, I think? Check out how the weather satellites do it if you're really interested.