The Challenges of Monitoring in Remote Areas
A remote location presents challenges that standard IoT solutions do not always address effectively: no Ethernet network, unreliable 4G coverage, limited power supply (or solar power), harsh climatic conditions (–20 °C to +50 °C), and difficult physical access (mountains, flood-prone areas, islands, or vast agricultural areas).
However, these sites are often critical: a pumping station in a rural area, an agricultural silo, a remote substation, or a weather station. An undetected failure can have serious consequences.
Remote site monitoring adapts standard IoT solutions to the constraints of off-grid environments:
- 4G connection with a multi-carrier SIM card to maximize coverage.
- Local data storage in case of network outages.
- Standalone solar power if no electrical grid is available.
- Low-bandwidth protocols (LoRaWAN, NB-IoT) for battery-powered sensors.
- Rugged housing (IP65+, extended temperature range).
Monitoring Architecture for Isolated Sites
Technologies Based on Site Profile
| Requirement | Recommended Technology |
|---|---|
| Adequate 4G coverage, Modbus devices | 4G gateway + multi-carrier M2M SIM |
| Poor 4G coverage, simple data | NB-IoT or LTE-M (better penetration) |
| Large site, sensors spread over 5 km | LoRaWAN gateway + LoRa sensors |
| Area completely outside cellular network coverage | Satellite (Starlink, Iridium) |
| Limited power supply | Standby mode + hourly or daily data transmission |
| Multiple sites within 100 km, same operator | Shared private LPWAN network |
Use Cases by Industry
Agriculture & Agri-Food Grain storage silos (temperature, humidity, CO₂, level), field weather stations, wine-making tanks, livestock farms (temperature, CO₂, humidity). Farms are often located in rural areas where 4G coverage varies by carrier.
Water & Sanitation Rural pumping stations, tapped springs, elevated storage tanks, and wastewater treatment plants for small communities. By definition, these sites are located far from urban areas and often lack both fiber-optic and ADSL connectivity.
Energy & Environment Open-field photovoltaic power plants (production monitoring, fault detection), weather stations, hydrogen generators, micro-hydroelectric dams, rural wind turbines.
Transportation & Infrastructure Engineering structures (bridges, tunnels) equipped with strain and vibration sensors, variable message signs, remote toll stations, and charging stations in areas without power infrastructure.
Buffer and Synchronization Management
A remote site with an intermittent 4G connection (outages due to inclement weather, network congestion, or a low battery) must store data locally. The Eziwan gateway has an onboard buffer (flash memory) that stores time-stamped measurements during periods without network connectivity.
When the connection is reestablished, the data is resynchronized to the cloud in chronological order. The platform reconstructs the complete timeline—with no gaps in the graphs and no lost data. Typical capacity: several days to weeks, depending on the measurement frequency.
The Eziwan Approach
The Eziwan Gateway is designed for harsh environments: compact DIN rail or IP65 enclosure, temperature range of -20 °C to +70 °C, 9–48 V DC power supply for solar systems, 4G connectivity with dual M2M SIM cards, and an optional external antenna.
Through the Eziwan Cloud: site monitoring, buffer management, alerts for network outages, and remote access to equipment even from areas with poor coverage.
For more information: remote site connectivity, multi-carrier M2M SIM, and remote site monitoring.