Real-Time GROUND VIBRATION Monitoring
Similar to REAL-TIME Structural Vibration Monitoring technics, 3-directional geophones are installed on the ground subsoil or bed rock layers to measure the vibration or seismic wave transmitted via the ground. The vibration is measured in mm/s, and range from 1Hz to 100Hz vibration frequency. Once the measured vibration velocity exceeds the limits recommended by the local authority, the sensors send a data and inform the stakeholders via emails. Additional sirens and alarms can be attached to the sensors to provide onsite warning to people around the monitoring points.