Sustainable IoT-Based Data Logger System for Marine Applications Using Renewable Energy

Marine navigation depends on continuous data logging, but traditional systems have problems such as slow GSM900 speeds (about 2 kbps), expensive satellite communication, and limited onboard storage. This research tackles those issues by creating a sustainable, high‑speed, IoT‑enabled marine data logger. Instead of a typical microcontroller, the design uses a programmable, multithreaded, low‑power Milesight UR32 industrial router. The router gives dual‑SIM 4G cellular connectivity, providing a reliable backup link that raises data rates to over 7 Mbps. Solar panels power the logger, allowing it to run on renewable energy for almost 24 hours on a single charge. It connects to various marine sensors through serial ports, keeping data collection and

remote monitoring continuous. The original paper shows clear gains in bandwidth and power autonomy, but the abstract does not give exact numbers for the storage capacity increase. For B.Tech students, this system serves as a practical guide for deploying sturdy, industrial‑grade IoT gateways in tough, off‑grid settings.

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