Greensea Systems, Inc., a developer of software for unmanned vehicles, marked the end of a successful 18-month R&D effort with the delivery of four navigation and control systems in May. The deliveries consisted of navigation and control software suites for a standalone Inertial Navigation System (INS), a 1,000-meter rated commercial AUV, a 6,000-meter workclass ROV and a retrofit for a miniature ROV. The recently completed R&D effort focused on modularizing Greensea's software architecture to allow for more flexibility in scope and increased portability across hardware platforms. This restructuring extends the capabilities of Greensea's INS technology through the modular addition of proven control, automation and communication modules.
"The range of requirements and platform types spanning these deliveries speaks to the power of the new architecture," said Ben Kinnaman, President of Greensea. "We are particularly excited about the full autonomy packages we are delivering to ROVs. We are finding this technology allows unprecedented accuracy, performance, and efficiency in ROV operations."
Both ROV systems delivered in May provided autonomous operating modes, route following, station keeping, dynamic positioning and vehicle control on top of an integrated INS core. While the workclass system was tightly integrated during the factory build, the miniature ROV system was a retrofit to a commercially available system using a separate small pressure vessel on the vehicle that integrated to the original topside interface and original vehicle subsystems. Both systems performed well during sea trials, demonstrating full autonomous functionality complementing traditional pilot-based ROV operation.
Greensea's architecture is a modular framework of software modules that plug into a core inertial navigation engine to add specific capabilities or configurations. The four deliveries in May illustrate some of the configurations possible. The standalone INS utilized only Greensea's core inertial engine to provide a fully integrated and aided inertial navigation capability in an instrument package. The commercial AUV system delivered mission planning, autonomous operation, vehicle control and payload control in addition to inertial navigation.
All four navigation and control systems featured variations of Greensea's Graphical User Interface (GUI) technology. This application framework provides a rich operator interface combining 2D navigation, chart plotting, vehicle control, payload management, mission planning and diagnostics. Designed for OEMs, the GUI is also built on a modular architecture and provides a fully customizable style sheet and graphical package.