4/17/2023 0 Comments Knock sensor microphone![]() T hen the signal is processed to obtain the results of the regression of its function envelope. The e ngine sound is recorded through a microphone and a Sallen-Key active filter is used to filter the detonation signal. Microphone sensor sare inexpensive anddo not need to be mounted on the engine itself, meaning they are not exposed to heat, although the signal processing needs to be conducted careful ly. For this reason, the accurate, rapid and real time detection and identification of detonation also still needs to be developed. This is because ,in terms of increas ingthe fuel efficiency and power of a petrol combustion engine, the problem of detonation is a very serious issue. ![]() ![]() This research proposes a new method for detecti ng detonation (knock), that is to say the use of microphone sensors and active filters are combined with the identification of the vibration pattern of the engine sound.
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