Knock sensors on cars - Electronic Circuits Projects Diagrams Free

raitl · 7th July 2006, 08:11 AM

Does anyone know what kind of frequency is the knock sensor listening for on cars? I know it's a piezo element, but no idea of it's specs.

jkearns · 7th July 2006, 09:08 AM

Its in the order of 5kHz to 20Khz, then there is a bucketload of DSP stuff needed to get the signal you are after.

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7th July 2006, 08:11 AM	(permalink)
raitl	Knock sensors on cars Does anyone know what kind of frequency is the knock sensor listening for on cars? I know it's a piezo element, but no idea of it's specs. __________________ Here...let me improve it for you! Puff of smoke ....oops...

7th July 2006, 09:08 AM	(permalink)
jkearns	Its in the order of 5kHz to 20Khz, then there is a bucketload of DSP stuff needed to get the signal you are after. __________________ Thanks, John Kearns http://www.flashusbinfo.co.uk