Technology
SismoSmart has one clear job: record how a building moves. Quick alerts matter. So does the report after the shaking stops. This page walks through what's inside the device and how the data reaches you.
An ADXL355-class MEMS sensor — roughly 100 times more sensitive than the accelerometer in a phone. It samples three axes 250 times per second and reaches a noise floor around 22 micro-g. Modest compared to a professional seismic station, lab-grade compared to consumer hardware.
The device compares the average of the last half second to the average of the last thirty seconds. When that ratio jumps, it flags an event. The algorithm is called STA/LTA — a standard in seismology. Doors slamming and footsteps don't cross the threshold. Real shaking does.
When the threshold is crossed, the device saves a 40-second window — four seconds before, thirty seconds after. If the internet drops, it holds onto the recording and sends it when Wi-Fi returns. That's the job a phone app can't do.
A single trigger isn't strong evidence on its own. When three or more devices in the same area trigger within 60 seconds, the event is marked confirmed. False alarms fall sharply. Public sources like AFAD and USGS provide cross-checks.
Every building has a natural frequency — the rate at which it tends to vibrate. That number drifts down with structural damage. The device measures it weekly, learns the seasonal pattern, and flags abnormal drops. The technical name is modal analysis.
After an event you get peak ground acceleration, peak ground velocity, a Modified Mercalli intensity estimate, and the percentage shift in your building's natural frequency. These are standard metrics in earthquake engineering.
V1 runs on 2.4 GHz Wi-Fi. The enterprise version (V2) will add LTE-M cellular and LoRa mesh, so building managers don't have to bring the device onto office Wi-Fi.
Standard USB-C 5V/2A. A 1 farad supercapacitor inside provides 30 to 60 seconds of bridge power during an outage — enough to send the last event to the cloud. No battery, no maintenance.
CE RED, Turkey's BTK frequency approval, RoHS and WEEE before launch. KVKK documentation for all data flows. FCC for the US comes later.