Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, India ...
The knock sensor is made up of a piezoelectric element. A working principle for piezoelectric elements involves the transmission of an electrical current in response to detecting a change in pressure ...
The sensor operates based on the time-of-flight (ToF) technique and employs thin-film piezoelectric-on-substrate (TPoS) resonators. The resonators operate at ~25 MHz and are integrated into two ...
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