Design and operation testing on the seabed of the data acquisition and management system of ocean cabled observatories

A set of information acquisition and monitoring system of subsea observatory network was designed. A kind of monitoring system transmitting IP packets by optical network based on event-triggered and timing-driven was proposed. A sort of overall framework of the monitoring and control system was put forward, which is composed of the shore station control center layer, the optical transmission backbone layer, and the marine data acquisition layer. The communication control strategies and custom communication protocols were designed. The subsea observatory network with this information collection system was placed on the seabed. After six months of continuous operation under the sea. This information collection system runs stably, which can collection data both of the marine sensors and itself correctly.