Ship Digital Shadow

The ship digital shadow is a one-way monitoring system that ingests real-world sensor data for passive performance monitoring and supervisory remote control. It utilizes advanced estimation techniques for continuous digital representation without feedback to the vessel. This system aids in condition monitoring and operational analysis, reflecting real-time data without interfering with the ship's operations.

• The ship digital shadow functions as a one-way monitoring system that ingests real-world sensor data without feedback to the vessel. Its primary aim is to maintain an updated digital representation for analysis.
• The architecture of the digital shadow includes advanced estimation techniques like extended Kalman filters and particle filters for processing live data streams. This enables effective condition monitoring and fault detection.In practical applications, the digital shadow concept can be seen in electronic chart display systems, which provide real-time positional and environmental data without any bidirectional control. Observers can only monitor the data.
• There are two levels of operation; the first is for passive performance monitoring with one-way data flow, while the second involves supervisory remote control where human operators guide the desired states using sensor data.
• The digital twin concept involves a human user interacting with physical systems through sensors and controllers. This setup allows for real-time monitoring and adjustments based on data feedback.
• The first level involves a human user sending commands to the ship's sensors, which collect data for visualization. This helps users understand the current status of the ship.In the second level, a controller receives inputs from the human operator to adjust the ship's machinery. This feedback loop ensures the ship maintains its desired course.
• The digital shadow allows for passive performance monitoring and supervisory control. This means operators can oversee operations without direct intervention, enhancing safety and efficiency.