I have a physical system which is dispersed over about 20-30 metres cubed and at random points within this space there are electronic nodes which have single binary outputs.
I want to monitor every time any of these outputs goes high from a central location accepting occational losses. The essential criteria in the solution is that each node communicates wirelessly and utilises the minimum amount of power possible.
- 1) Is there a way to leverage (hack) RFID technology for this purpose, perhaps powering an active RFID tag for a transmission and reading this transmission from the central location?
- 2) If this is not possible, what would be the most common solution in such a scenario where power is highly constrained and fault tolerance (acknowledgement / confirmation) is important but not paramount? Would Bluetooth LE be my best bet or a different solution?