A flood sensor is simple technology. Each WC in the planet has one. You just need a box, a wire, and a buoy attached to a rod. When the buoy starts floating the rod closes an electric circuit conveniently placed much higher than the highest flood.
Could be introduced in a tube drilled directly in rock for minimum visual impact. A system of an oiled hollow cylinder (buoy) inside a major tube, all placed in the drilled tunnel could move smoothly for a long time and return again by gravity after the flood as long as the drill left some empty space below (for mud evacuation purposes)
> How does it transmit data?
standard electric cable (for example), or wifi, radio... whatever appropriate for the area
> Where is placed?
The rod/buoy, At 50cm high or 1m high (or any appropriate value) in the upper parts of the cannon. This would avoid the problem of mud covering electronics also.
> What happens if it fails?
The system returns to the same point as it is currently: "This is dangerous, not guarantee, we recommend to hire a guide, do it at your own risk".
The difference is that in the meanwhile some lives could be saved, so would be an improvement over the current situation.
> How do we know if it fails
A final led at the starting (and end?) of the cannon could be arranged to turn off, for example. Trivial in design of electronic circuits.
Could be introduced in a tube drilled directly in rock for minimum visual impact. A system of an oiled hollow cylinder (buoy) inside a major tube, all placed in the drilled tunnel could move smoothly for a long time and return again by gravity after the flood as long as the drill left some empty space below (for mud evacuation purposes)
> How does it transmit data?
standard electric cable (for example), or wifi, radio... whatever appropriate for the area
> Where is placed?
The rod/buoy, At 50cm high or 1m high (or any appropriate value) in the upper parts of the cannon. This would avoid the problem of mud covering electronics also.
> What happens if it fails?
The system returns to the same point as it is currently: "This is dangerous, not guarantee, we recommend to hire a guide, do it at your own risk".
The difference is that in the meanwhile some lives could be saved, so would be an improvement over the current situation.
> How do we know if it fails
A final led at the starting (and end?) of the cannon could be arranged to turn off, for example. Trivial in design of electronic circuits.