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

tecjim wrote:
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. It has a flat surface to mount to
2. It has wheels for mobility for the movement of a forward or reverses
(push or pull)
3. Power supplied 12v DC 20amp
4. 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. Bi-Directional
2. 1-3 phase signal, reverse motion and stationary (non movement)
3. Generate a signal reverse or opposite direction from a forward
motion
4. Time delay adjustment
5. Temperature rating -40°C - +50°
6. .5v - 12v DC .01amp
7. Sealed unit
8. Weather proof
9. .002% accuracy
10. Vibration tolerance adjustment
11. To be used in an external application only
12. No moving parts or external reference
13. Non magnetic
14. PC programmable

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

doppler device ?


--
"I am never wrong, once i thought i was, but i was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5

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