Reply To: Lone-worker tracking inside a substation building with no GPS: what can I build in Hermetry for it?

Megan’s right. The Personnel tracking page calls Hermetry Safe the dedicated worker-safety product but doesn’t say what it does, so I wouldn’t promise anything from it. The Personnel tracking ready solution is what I’d use, and room-level is exactly what it’s built for. I set it up for a pumping station last year.

The way zones work decides your hardware. Hermetry does not work out zones from positions or radio signals, and it has no geofence polygons. The tracker, or the gateway that hears it, decides which zone the person is in and sends the zone name in the key zone. So the zone logic lives in your hardware: a small BLE transmitter fixed in each room, the worker’s tracker reports the strongest one it hears, and the tracker or the gateway maps that to a zone name like switchgear-2.

The solution’s tracker profile then gives you the rest:

keys:   lat, lng, zone, event, battery, air_temp, light
event:  normal | motion | fall | motionless | sos | press_once
alarms: fall, motionless, sos (Critical), help_call,
        forbidden_zone (zone == the tracker's forbiddenZone attribute),
        battery_low, device_offline (15 min)

The event words must be exactly those, lower case. If your tracker sends something like FALL, translate it in the profile’s root flow. Each tracker gets a server attribute forbiddenZone with one room name, so set it to the switchgear room for everyone without a permit. Only one forbidden zone per tracker out of the box, a second needs an extra rule.

For the map, use the Map card in image mode with the building’s floor plan, positions in pixels. Full description: Personnel tracking.