MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202541114816 A) filed by Sri Sairam Engineering College, Chennai, Tamil Nadu, on Nov. 21, 2025, for 'advancing maritime safety: electromagnetic techniques for efficient underwater communication.'

Inventor(s) include Gunavathi D; Harini S; Diksha R S; and Myvizhi Selvi V.

The application for the patent was published on Jan. 9, under issue no. 02/2026.

According to the abstract released by the Intellectual Property India: "In underwater environments where acoustic, optical, and radio-frequency methods are insufficient, the current invention pertains to a Magnetic Induction (Ml)-based underwater communication system that allows for the dependable, low-latency transmission of environmental and diver-related data. To gather real-time underwater parameters, the system consists of a. sensor-integrated transmitter module that has an ultrasonic distance sensor, a temperature sensor, and a total dissolved solids (TDS) sensor. After processing the sensed data, a microcontroller creates structured packets and uses a transmission coil to modulate the packets into low-frequency magnetic fields. The transmitted data is reconstructed for display, monitoring, or forwarding to a surface communication system by a corresponding receiver module that detects the magnetic field variations and includes a receiving coil and signal conditioning circuitry. The invention offers a reliable, energy-efficient, and interference-resistant communication system that can function in low-visibility, turbid, and saline underwater conditions. Applications for the system include industrial inspections, aquaculture management, environmental assessment, underwater robotics, and diver safety monitoring."

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