Any ideas on how to accomplish this?
I'm just rolling this around in the back of my head for a project.
I live in a rural area and we have problems with hunters driving through the yard without stopping to ask permission to hunt or to even be on our land in the first place. We don't always see them go through, but find evidence of what happened later.
We also have a problem with wild animals walking through the yard.
Now, a simple motion detector in the driveway can alert us if either a deer or a vehicle goes past, but it can't distinguish one from the other. It might go off in the middle of the night and we see it's just a deer going past the driveway. We'd like it to go off if a vehicle goes through (night or day), but not when a deer goes past. In other words, wake us up if someone drives in the yard, but ignore the deer or other animals walking through.
I'd like to build something that sees the vehicle, ignores the deer, send a radio signal from the driveway to the house to sound an alarm and runs on a 9v battery for extended periods of time like the existing motion detector does.
All of this should be easy except the detection process. Any ideas on how the PIC could tell the difference and possible related hardware? Remember, for now I'm just toying wiht this idea.
Thanks.
Bart
Natural, keep it Natural ...
Hi, bart
Some natural scenes like a little river, some rocks here and there .... and so on could definitly stop bicycles, bikes, Quads and motorized vehicles.
And that would be valuable for your environment ...
that what we've done to stop trespassing through our model planes landing ground ...
Alain
You want to cense cars and not animals.
You want to cense cars and not animals.
1.)Place a rubber hose across the road. Plug the far end. Close end has a pressure censor. The hose should not be airtight, it needs a small hole [leak]. When a car drives over the hose, the air pressure changes.
2.) I have a commercial device. There is a “coil” in a PVC tube buried under the road. The coil oscillates. The frequency is not stable, it slowly drifts over time. When a car passes over the coil the frequency changes fast. It is built on a ‘metal detector’ idea.
3.) I now am playing with flux-gates for another projects. It appears I can detect large metal objects 20 feet away. Too complex but fun.
I can supply details if you need it.