E-Pixel Seismic Sensor

Seismic Sensor for Structural Health Monitoring and Earthquake Tracking

The E-Pixel Seismic Sensor is a professional structural health monitoring system that continuously observes how buildings and critical infrastructure behave before, during and after an earthquake. Seismic sensor stations placed at strategic points in the structure track movement to millimetre precision. Seismic sensor displacement sensitivity is 3-4 mm, tilt sensitivity is 0.1 degrees, and the system operates with a stated accuracy of 99.9%. Structural health monitoring stations stay connected to the central system 24/7; earthquake monitoring data collection and analysis run automatically.

Millimetre-precision structural monitoring with a seismic sensor

Damage in a structure rarely appears at once; small positional shifts, tilt differences and rotational movements accumulate over time. The seismic sensor measures these to millimetre precision, recording them while still invisible to the eye. Structural health monitoring covers structural displacement as well as tilt and rotation. Seismic activity is recorded in real time, which makes it possible to review afterwards how the structure responded during an earthquake. After an earthquake the key question is whether the building is usable, and it is answered far more reliably when seismic sensor data can be compared against pre-earthquake reference values.

Multi-level smart alarm system in the seismic sensor

The structural health monitoring system uses a multi-level alarm mechanism instead of a single threshold, with information, warning and critical tiers defined separately. Because seismic sensor thresholds are customisable, they are tuned to each structure; the limits meaningful for a hospital are not those for an industrial facility. This prevents unnecessary earthquake alarms on minor movement while ensuring genuinely critical changes are noticed immediately. The tiers also allow planning of who is informed and when: an information-level change is logged while a critical-level movement calls for direct intervention.

Earthquake monitoring map, 3D visualisation and analysis

Data collected from seismic sensor stations is shown on a real-time interactive map where each station's status is visible at a glance. Structural movement is visualised with 3D animations, helping non-technical stakeholders understand structural health monitoring results. Trend charts and heat maps track change over time and regional earthquake risk analysis is possible. The system also monitors environmental data such as temperature and humidity, so conditions are considered alongside seismic sensor readings. A live demo panel is available at deprem.epixel.app, showing a real-time map and station statuses.

Structural health monitoring before, during and after an earthquake

A structural health monitoring system is not a device that works only during an earthquake. Beforehand, the seismic sensor records how the structure behaves under normal conditions and establishes a reference; without it, post-earthquake readings cannot be interpreted. During an earthquake, how the structure moved and how much displacement occurred at each point is recorded in real time. Afterwards, seismic sensor readings are compared against the reference to assess whether permanent displacement occurred. Millimetric permanent deformation that visual inspection would miss appears in that comparison and provides measured data for deciding whether a building stays in use.

Seismic sensor use in critical infrastructure and industry

In critical infrastructure such as hospitals, bridges and public buildings, structural health monitoring is decisive for continuity of service after an earthquake. Buildings such as hospitals, needed most immediately after an event, must have usability assessed quickly, and seismic sensor data underpins that assessment. In bridges and viaducts, earthquake monitoring is valuable both for seismic events and for tracking fatigue under continuous traffic loading. In industrial facilities, factories and power plants the seismic sensor system is part of risk management, ensuring costly decisions such as halting production or evacuating a site rest on data.

Continuous earthquake monitoring and central connectivity

Seismic sensor stations run 24/7 and stay permanently connected to the central system. Data collection is continuous and analysis automatic; no operator needs to watch a screen. The value of structural health monitoring grows over time: seismic sensor readings accumulated across months define the structure's normal behaviour range, and once that baseline exists deviations become far clearer. In multi-station installations, movement at different points is compared, distinguishing whether it affects the whole structure or only part of it.

Frequently Asked Questions About the Seismic Sensor