Sensor power and duty-cycle assumptions — Demory farm site¶
Purpose: Planning assumptions for field node power and message cadence on Demory (off-grid-first)—not site measurements. Validate with metering and SoC logs before scaling.
Architecture: Farm sensor architecture — Demory farm site.
Power domains (farm-wide): Power domains and battery-backed infrastructure tiers — Demory.
Protocol references: LoRaWAN duty-cycle / ADR — lorawan-specification-v1-1.pdf (see extract); Meshtastic power notes in Demory farm sensor layer — source cluster.
Assumptions (explicit placeholders)¶
| Topic | Assumption | Validate by |
|---|---|---|
| S-class leaf | mW–W average; solar + small pack common | Measured load budget per node |
| LoRaWAN uplink | Sparse intervals (minutes–hours); regional duty-cycle caps | NS metrics + RF plan |
| Meshtastic | Higher active draw when routing; sleep when leaf | Firmware telemetry / bench |
| HaLow CPE | Higher continuous draw than LoRa sleep; budget airtime + idle | PoE / solar sizing |
Solar friendliness (design heuristic)¶
LoRaWAN / Meshtastic leaf nodes are often easier to keep on small panels and modest batteries than always-on HaLow AP—compare LoRaWAN vs Wi‑Fi HaLow vs Meshtastic — Demory.