EarthSub SENTINEL is a unique and revolutionary Australian designed electronic ground movement sensor that delivers the ability to remotely monitor multi dimensional movement in terrain or water based geological structures. Physical structures such as buildings, towers or tunnels can also easily be monitored in real time by EarthSub SENTINEL as part of a Structural Health Monitoring regime.
EarthSub is firstly, an early warning system for movement that is unexpected such as landslides, earthquakes, dam wall collapses and sink holes but can equally be used as a logging device for applications where movement is anticipated such as mining subsidence monitoring.
The core of the EarthSub SENTINEL sensor is “next generation” MEMS (Microelectromechanical systems) chip technology that integrates all sensory components such as accelerometers, compass, gyroscopes, temperature etc into a single silicon package. Precision manufacturing of these chips means consistency and ultra high reliability of the required functions.
Accordingly the EarthSub sensor can detect movement forward, back, up, down and left or right to a sensitivity of .01 mm. It can also uniquely measure pitch, roll and yaw to an accuracy of .1 degrees.
Primary uses of MEMS chips include military applications such as UAV and missile deployments, NASA aerospace projects and consumers would recognise low accuracy, low cost variants in game consoles such as Nintendo Wii or Sony Playstation controllers. MEMS components in EarthSub are military grade; high accuracy, extreme temperature, humidity and vibration resistant and designed for longevity in remote locations.
A basic EarthSub SENTINEL installation comprises a sensor, connectivity components and a site controller. The site controller provides the interface for up to 64 ground movement sensors and decodes movement data and in addition, has an analogue alarm capability. As a result, the site controller is able to send the collected data via optional forms of telemetry to the outside world for display and further manipulation.
For high risk early warning systems the analogue display allows a visual indication of unexpected earth or structural movement that can be seen by maintenance or field personnel in the vicinity thereby reducing 100% dependency on remote data communications to detect catastrophic failures.
Data telemetry between components can be via “toughened” fibre optic cable or high performance radio with ranges up to 25Kms from sensor to site controller; or unlimited via satellite. This makes EarthSub an ideal solution for really remote monitoring applications. Additionally all devices in a typical configuration are monitored several times per second for a “heartbeat” to eliminate the likelihood of a system or component failure to compromise the monitoring function.
At the back end of a deployment is a cloud or client hosted software suite that collects data from EarthSub ground movement sensors and displays relevant alarms via text, SMS , email or a desktop visual application.