I have installed a modified gallon reading 3/4" water meter in my yard (sub-meter) so I can easily “view” my water usage real time. The meter modification consists of a reed switch that is pulsed every time by tiny magnets glued to the meter dial. I get a contact closure every time a magnet passes the reed switch. Every revolution of the dial gives me ten pulses.
For those interested there are simple photo detector circuits available the can be used to read water company “leak detector” trangles and generate pulses. This precludes the need to sub-meter like I did.
Using twisted pair now send the pulses to a inexpensive ($40) battery powered LCD 6 digit digital counter in my home. I generally try to reset the counter at the start of my billing period and log usage as the month progresses.
My mission now is to read the meter pulses wirelessly and push the data to a gateway and see usage and analysis via a database and the web.
Has anybody got suggestions on the best long term approach I should take to wirelessly link my meter rig to my gateway?
Considerations are. Mote battery life, range, hub and web software app. Can energy monitoring app(s) be used easily.