MUMBAI, India, June 22 -- Intellectual Property India has published a patent application (202631067703 A) filed by Jis Institute Of Advanced Studies And Research, Jis University on May 29, 2026, for “smart Tuning Fork Sensor For Cost-Effective Ash Hopper Compressor Control”.
Inventors include Debyendu Chakroborty; Bikas Mondal; and Subhankar Singha.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: ABSTRACT A smart tuning fork sensor system and method are disclosed for power-optimized, closed-loop demand control of pneumatic air compressors in industrial ash handling systems. The system comprises a piezoelectric-driven tuning fork sensor flange-mounted within an ash hopper and configured to vibrate continuously at a natural resonance frequency of 400 kHz. Physical contact by accumulating fly ash dampens the prong vibrations, which is captured by a signal conditioning circuit and converted into a 24V DC control signal. This signal acts directly upon a compressor control relay to initiate compressor loading and ash purging, thereby replacing inefficient timer-based architectures and reducing compressor loading times from 0.35 to 0.24 hours per cycle to save approximately 17.79 kWh of energy per cycle. A stepped-down 5V DC branch powers an IoT edge microcontroller (ESP-32NodeMCU ESP-8266) that processes the data into a 4-20 mA loop and wirelessly streams real-time process logs to a remote monitoring cloud server.
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