How might we decrease the occurrence of marine species entanglements with fishing gear and decrease ghost gear creation, while making the commercial fishing process more intelligent for fisheries?
Our main goal is the prevention of gear loss. A great solution not only benefits the environment but also benefits the fishers, they can avoid the income losses that ghost gear creates and also benefit from an intelligent gear that collaborates to improve their efficiency.
To achieve our goal we define a concept of operations the includes an intelligent buoy that allows fishers to track the position of the traps, and a ropeless mechanism that prevents entanglements.
EJA robot is a ropeless fishing system - the buoy is launched to the surface only after certain sensor data
This project contains the design of 2 electronic devices (from left to right in the following image): the Intelligent Buoy and the Onboard Gateway.
To achieve the position marking of the traps we selected 5 main components:
- RFM95W LoRa Radio
- TB6612FNG MOTOR DRIVER BOARD
- Adafruit Ultimate GPS
- SIM7600CE-T 4G(LTE) Arduino Shield
From this main components we designed 2 PCBs: Buoy A V1.0 and Buoy B V1.0.
Buoy A V1.0 is a 141.73 mm x 54.86 mm PCB that integrates the 5 main components (ESP32, LoRa, GPS, Motor Driver and GSM/GPRS). Buoy B V1.0 is a 102.46 mm x 44.20 mm PCB that integrates 4 of the main components (ESP32, LoRa, GPS and Motor Driver).
To describe the PCB designs we have prepared the following guides:
- Buoy A - Electronic Design - Github Repository
- Buoy A - Firmware - Github Repository
- Buoy A V1.0 - Schematic and PCB Design
- Buoy A V.10 - Bill of Materials
- Buoy A V1.0 - Assembly
- Buoy A V1.0 - Wiring Diagrams
- Buoy B - Electronic Design - Github Repository
- Buoy B - Firmware - Github Repository
- Buoy B V1.0 - Schematic and PCB Design
- Buoy B V.10 - Bill of Materials
- Buoy B V1.0 - Assembly
- Buoy B V1.0 - Wiring Diagrams
- Buoy A V1.0 and Buoy B V1.0 - Future Improvements
It is possible to adapt more modules/breakout boards to the current designs, there are dedicated connectors that allow it in each board, we have explored the following additions:
Onboard Gateway is a 134.11 mm x 62.48 mm PCB that is used to communicate with the intelligent buoy and receive the GPS data. The design integrates 3 main components:
From this main components we designed the PCB: Onboard Gateway V1.0 (134.11 mm x 62.48 mm).
To describe the PCB design we have prepared the following guides:
- Onboard Gateway - Electronic Design - Github Repository
- Onboard Gateway - Firmware - Github Repository
- Onboard Gateway V1.0 - Schematic and PCB Design
- Onboard Gateway V.10 - Bill of Materials
- Onboard Gateway V1.0 - Assembly
- Onboard Gateway V1.0 - Wiring Diagrams
- Onboard Gateway V1.0 - Future Improvements
--- Version 2 ---
3D viewer: https://a360.co/38TzX7L
See all of the files on the Github repository (including bill of materials (BOM), and production plan)
--- Version 1 ---
The Eja ropeless gear system consists of three parts: Release Mechanism, Intelligent Buoy, and Onboard Gateway. Here are the mechanical design specifications for each, also available as a pdf here.
3D viewer: https://a360.co/3msDSha
3D viewer: https://a360.co/3hJjc0R
3D viewer: https://a360.co/32DGUHE
For additional information relating to the Bill of Materials and the Parametric Design, please see this project log: Mechanical Design Specifications.
All of the 3D print files, .STEP assembly, and more can be found on Github here.