The Engineering Challenge
The deployment of sensitive, proprietary sensor technology in subsea environments requires robust mechanical protection and reliable operator interaction. The objective was to engineer an IP68-rated enclosure capable of packaging a data-logging embedded PC and power supply, while ensuring operability by a diver under low-visibility, high-pressure conditions.
Hardware Architecture & Resolution
G28LAB focused on the “housing and interaction” layer of the system, isolating the delicate electronics from the subsea environment while maintaining full usability.
- Pressure-Resistant Enclosure: A custom watertight housing was engineered to encapsulate the Single-Board Computer (SBC) and battery array. The architecture relies on precise O-ring sealing channels calculated to maintain structural integrity and hermeticity at operational depths.
- Diver Interface (HMI): To enable the operator to manage data collection sequences without surfacing, external waterproof magnetic/piezo switches were integrated. This allows the diver to reliably execute Start, Stop, and Pause commands, and power cycle the device underwater.
- Sensor Rigging: A structural frame was designed to mount two external electromagnetic sensors at fixed, calculated offsets from the central logger, ensuring consistent data acquisition geometry during inspection sweeps.
Technical Execution
- Mechanical Design: Full assembly, tolerance calculation, and sealing design were executed using SolidWorks. The design was optimized for neutral buoyancy and ergonomic handling by the diver.
- Hardware Integration: Internal architecture was structured for efficient wire routing and secure mounting of the embedded PC, ensuring reliable interfacing with both external sensors and control buttons.
- Rapid Prototyping: Iterative 3D modeling and physical prototyping of the housing were conducted to guarantee perfect fitment and integration with the client’s existing sensor modules.