Looking for a sensor or devise, that indicates a forward and a reverse movement

Oct 17, 2006 1 Replies

Does anyone know of a devise or sensor that can indicate a signal or no signal for a forward movement, but have a signal for a reverse movement? Or is it impossible to do? I am open to any other solutions that someone can tell me



Description of project is that



1=2E It has a flat surface to mount to
2=2E It has wheels for mobility for the movement of a forward or reverses (push or pull)
3=2E Power supplied 12v DC 20amp
4=2E To be used for out-door use, subject to extreme weather conditions and temperatures.

Example: Take a child's red wagon being pulled or pushed in different directions. Pull the wagon towards you and walk "prefer a signal Stop "prefer a signal Push the wagon backwards "signal " Now pull the wagon towards you and walk "prefer a signal


The specs should fall into this area Sensor Specifications:


1=2E Bi-Directional
2=2E 1-3 phase signal, reverse motion and stationary (non movement)
3=2E Generate a signal reverse or opposite direction from a forward motion
4=2E Time delay adjustment
5=2E Temperature rating -40=B0C - +50=B0
6=2E .5v - 12v DC .01amp
7=2E Sealed unit
8=2E Weather proof
9=2E .002% accuracy
  1. Vibration tolerance adjustment
  2. To be used in an external application only
  3. No moving parts or external reference
  4. Non magnetic
  5. PC programmable

Something like a digital compass? I'm not that experience in this field



What about a PC's optical mouse mounted just above one of the non-steering wheels?

-- Graham W

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