Methods
Summary
The project is organized into the following phases: design and construction of cells, laboratory testing, and the use of cells as a primary or complementary power source in nautical signaling systems.
For the design and construction of the cells, we use modeling software to design structural components, a laser cutter or 3D printer for fabrication, and manual assembly of the electrodes.
Laboratory tests are conducted under dry, humid, freshwater-submerged, and seawater-submerged conditions. Data is collected using a custom system we developed, which utilizes an ESP32 microcontroller to transmit real-time data to a ThingsBoard server.
The assembly of signaling devices also requires modeling, fabrication of components using a 3D printer and/or CNC cutting machine, and workshop facilities for equipment assembly.
Field tests are conducted at a marine farm on the coast of São Paulo, where the system is used to signal an aquaculture area.
Challenges
Marine Environment Challenges and Field Testing
Physical installations in marine environments are highly challenging due to the intense impact of multiple factors, including UV radiation, heat, waves, chemical composition, and biological diversity. Field tests are essential for this project, as laboratory experiments often cannot fully replicate all real-world marine conditions.
With this in mind and after conducting preliminary tests, we have designed parallel experiments: one focusing on the performance of hygroelectric cells and the other on the structural integrity of the equipment powered by these cells. We have already obtained important results in both areas and have developed proposals for further field testing. Key aspects to be evaluated include:
- Voltage and Power Output of Hygroelectric Cells – We will test voltage boosters and energy accumulators to enhance system efficiency and stability.
- Resistance to Marine Conditions – We are using materials designed to withstand different pressures, including UV protection, mechanical resistance to waves, and anti-biofouling coatings.
Pre Analysis Plan
Data analysis can be divided into two main parts:
- Performance of the hygroelectric cells
- Resistance to chemical, physical, and biological pressures affecting the cells and equipment
The performance of the cells is primarily analyzed through our real-time data collection system, which monitors voltage and power output.
The resistance of the cells and equipment is assessed through periodic inspections of devices in operation and detailed analysis of equipment that exhibits failures, allowing us to identify weaknesses and improve durability.
Protocols
This project has not yet shared any protocols.
