How to work knock sensor? নক সেন্সর কিভাবে কাজ করে?

Knock also known as Detonation, Pinking, Spark Knock, Pre ignition.
The knock sensor is located on the outside of the engine block. It is intended to record knocking noise in all engine operating states in order to prevent engine damage. The knock sensor "listens out for" the structure-borne vibrations from the engine block and converts these into electrical voltage signals.