Researcher Developed Low-Cost Earthquake Sensor
A pocket-sized device successfully tracked seismic activity in Los Angeles during a 2020 field trial.
Updated on Sept. 27, 2026 in Geology
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Vivien He developed Qube, a sub-$100 earthquake sensor that successfully detected all tremors above magnitude 3.0 during a nine-month trial that concluded in May 2021. The device performed with high correlation to official monitoring networks.
Why it matters
The research aimed to lower the barrier for earthquake early warning systems by moving from expensive institutional hardware to a consumer-based IoT approach. This validation suggests that affordable, networked sensors could supplement existing seismic infrastructure.
The Qube hardware produced earthquake waveforms consistent with official network seismometers, achieving an R² value of 0.9562 for ground-motion amplitude correlation. The device successfully detected every seismic event above magnitude 3.0 during the trial period.
The players
Vivien He
Researcher and developer of the Qube earthquake monitoring system.
The details
Qube measures ground-motion velocity using an internal geophone, a device that converts ground vibrations into electrical signals. It processes this data to trigger local alerts via an onboard alarm and sends notifications over Wi-Fi. The research validated the sensor by comparing its recordings against established network seismometers in the Los Angeles area.
Timeline
September 2020: Testing of the Qube device began in Los Angeles.
19 September 2020: The device detected an M 4.5 earthquake.
May 2021: Testing of the Qube device concluded.
The Tech Race
The Qube project explores a decentralized alternative to the highly sophisticated seismic networks currently operated by government agencies. It specifically tests whether mass-deployed, low-cost sensors can achieve the accuracy required to supplement institutional monitoring programs.
The Qube sensor is approximately the size of a Rubik's cube and requires only a Wi-Fi connection to function. It demonstrates a potential path for future low-cost, resident-deployed earthquake early warning tools.
The takeaway
The Qube device provides a validated, low-cost blueprint for on-site seismic monitoring. Future developments in this field will likely track whether such IoT devices can integrate into existing institutional warning workflows.
Further reading
For more on how seismic activity is monitored, visit geology.
Source note: This article includes information reported by The Times of India.
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