Power System Assembly (Vision/AI Module)

/images/docs2_html_762c744a71c39314.png The CAD model shows a breakdown of the electronics used in the Vision/AI module. The buck converter is used to step down the input voltage supplied by the battery and regulates the output voltage. The 5-port Ethernet Switch facilitates the communication between the Cerulean Omniscan 450 Side Scan Sonars, Jetson Orin NX, and the communication bridge between the Raspberry Pi 4 in separate module and the Orin NX via the Fathom Tether cable. The Orin NX is used for edge computing and processing the data from various sensors of the ROV to execute complex algorithms for navigation and vision-based applications.

/images/docs2_html_636288fe0f94ab9f.png Comparison between the CAD model and the physical prototype.

/images/docs2_html_9e34985b47fcc453.png The 8000mAh, 22.2 V LiPo battery is connected to the vision/AI module through the XT90 connectors as shown in the image.

/images/docs2_html_11eb3c5f0050ef23.png Each channel of the power terminal block is electrically separated, which serves as the connection points for input and output power channels for the electronics. The buck converter steps down the input voltage from the battery via the input power channel wiring connection to an output voltage of 18 V and then connected to the output power channel, to power the electronics. The Orin NX requires an input voltage of 5 to 20V, and the side scan sonar power modules require an input voltage of 10 to 30V.