Range and Accuracy
The range and precision of the area depend on the power set in the beacon (short, medium, long), the position of the foot in relation to the beacon, and the environment*.
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Minimum range: distance from which the XSole PTI insoles normally pick up the beacon without noticeable delay and systematically.
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The data below was measured with a pair of insoles worn with safety shoes, the toe of the feet facing the beacon and the latter being fixed vertically at 1 meter from the ground.
Outdoors, open ground, paved ground
| XSpot beacon power | Minimum range | Maximum range |
| Short | 1m | 2m |
| Average |
4m |
5m |
| Long |
12m |
14m |
Indoors, smooth concrete walls, ceiling and floor, open space
| XSpot beacon power | Minimum range | Maximum range |
| Short | 2m | 3m |
| Average |
7m |
9m |
| Long |
35m |
40m |
Geolocation accuracy with XSpot beacons
The precision of the geolocation is not only linked to the information provided above.
If only one tag is used, the precision above can be used.
If several beacons are present, the zone can be more precise by using the cross-checking of these zones. With a triangulation we estimate a geolocation precision of the order of 10 m.
(*) Disclaimer and limits on the information provided
Some surfaces allow electromagnetic waves to slide (or "bounce") while others tend to absorb (or "dampen") them.
The shape and density of surrounding objects also has an impact on wave propagation. For example, the density of foliage, more or less dense steam or smoke, the size of the room (piping) will dampen and deflect the signals.
Moving parts such as motors, depending on their size, their speed of rotation or power devices (welding station, foundry) will also affect the quality of wave propagation.
Beyond the figures presented in this article, and given the many parameters to take into account, nothing can fully replace field trials.