MUMBAI, India, March 13 -- Intellectual Property India has published a patent application (202631024453 A) filed by National Institute Of Technology, Silchar, Assam, on March 2, for 'non-invasive liquid level sensing device and method for assisting visually impaired individuals with medication management.'
Inventor(s) include Dr Anup Kumar Sharma; Kaushik Borah; Abhinab Handique; Rajdeep Das; Dr. Sushant Negi; and Dr. Simanchal Kar.
The application for the patent was published on March 13, under issue no. 11/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a non-invasive liquid level sensing device designed to assist visually-impaired individuals in managing liquid medications. The device comprises a self-contained circular cap enclosure configured to threadably engage the neck of a medication container. Embedded within the cap is a sensing array consisting of at least one infrared (IR) emitter and a plurality of vertically arranged IR detectors positioned in opposing pairs along the circumference, creating multiple line-of-sight optical paths across the container's central axis. The IR detectors generate signal outputs corresponding to liquid-level attenuation, which are processed by a control unit comprising analog input terminals, a power interface, and digital output terminals. Series resistors and capacitors precisely regulate current and suppress noise in the sensing circuit. A buzzer, actuated by the control unit, provides distinct audio feedback patterns indicating liquid volume levels and can announce stored label information, enabling safe and accurate medication identification."
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