GEOwarning, Early Warning Accelerograph

GEOwarning is a compact, ultra-low-cost digital accelerograph. It integrates three axes, a MEMS accelerometer, a 20-bit digitizer, embedded Linux OS, and GPS or NTP timing. SeedLink and Earthworm servers ensure reliable, real-time data telemetry, while a large storage volume ensures a long period of local data recording. The instrument has very low power consumption, so a small 12 V DC battery can power it. Due to its small size and flexibility for communication protocol (Ethernet or WiFi) and timing (GPS or NTP), it can easily be installed at buildings and other structures. The device supports a software configurable, variable range of +/-2 g, +/-4 g, and +/-8 g, presenting an ideal solution for a wide range of structural monitoring and early warning applications. Minimum data latency and the calculation of an earthquake’s Cumulative Absolute Velocity (CAV) guarantee that the user can be alerted immediately at the beginning of an event. Compact design is a competitive advantage and is reflected in the price, which is only a small fraction of the typical commercial accelerograph’s cost. The user can now deploy five times more units for the same budget.