Choc sensor (shock)

Hi people :)

i'm looking for a choc sensor (vibration sensor also can make it) my problem is the range!i want to detect a choc from a distance between 0cm-150cm from the sensor. does any one have any idea about this?

moderator: added shock to title

Hi 5amour.

Can you describe the system for us? What is the source? How will the shock reach your sensor? Through air, water, rock, metal,...?

Pogo.