Estimate the net area covered by a group of IoT sensors when each unit has a nominal circular detection radius. The model applies both an overlap allowance and an environmental effectiveness factor, then reports effective coverage, nominal coverage, and coverage per sensor. Use it for early layout comparisons while recognizing that walls, terrain, interference, sensor orientation, and irregular boundaries require a site survey.
The main result is a planning estimate of distinct, usable coverage after two reductions. It is not a guarantee that every point inside the calculated area has reliable sensing or communication.
Circular footprints are an approximation. Verify placement with manufacturer specifications, field measurements, and local radio or sensing conditions.
For 40 sensors with a 25 m radius, 20% overlap, and 85% environmental effectiveness, nominal combined area is 78,540 m² and estimated effective coverage is 53,407 m², or 5.34 hectares.
A circle is a simple first-pass footprint based on radius; real coverage may be directional or irregular.
It represents duplicate footprint area used for continuity, redundancy, or layout constraints.
Use test data or manufacturer guidance for the site; 100% means no environmental reduction.
Only if the entered radius reflects the limiting communication range. Otherwise assess gateway coverage separately.
The calculator divides effective square meters by 10,000.
| Factor | Effect on coverage |
|---|---|
| Sensor count | Multiplies total footprint |
| Radius | Area changes with the square of radius |
| Overlap | Reduces distinct covered area |
| Environmental effectiveness | Reduces nominal area for site conditions |