Connection system

Underwater nodes provide the necessary infrastructure in terms of e.g. electrical power and data connections to continuously operate complex sensor systems having high power consumption on the seafloor. A stable underwater node technology for shallow water installation (< 300 m) has been developed in the frame of COSYNA (Coastal Observing System for Northern and Artic Seas). The COSYNA underwater node can be installed with a cable connection to shore up to 30 km offshore for a yearround operation. Thus, it provides the opportunity for a continuous observation of processes in the oceans and coastal areas. Since 2014 two COSYNA underwater systems are in operation: one is offshore the German island Helgoland, the second one is installed in the Arctic at 79°N offshore Spitsbergen (Svalbard). Advantages: ⦁ Long-term underwater operation for various applications ⦁ Possibility for different interfaces ⦁ Power supply from shore or for small to medium outputs by battery ⦁ Smart safety concept ⦁ Control and supervision of all relevant measures (voltage, currents, operating temperature, leakage) ⦁ flexible customized and modular setup of complex measurement systems ⦁ Secure access from all over the world ⦁ Each single sensor can be checked and adjusted separately by remote ⦁ Broadband communication of single devices with 100 Mbit/s ⦁ Internal time-server for synchronisation ⦁ Web-based management ⦁ Strict separation of single user access to their corresponding sensors