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Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
ok, so I have this shock sensor I was using in my high speed photo V3 setup, and I found out after trying it that it has a serious delay... I do not know anything about the unit other than how to use it, as it was from a local surplus store... does anyone here know of some unit that does not have a large delay? the max allowed is just a couple milliseconds, and that is for my "slower" events...
Registered Member #16
Joined: Thu Feb 02 2006, 02:22PM
Location: New Wilmington, PA
Posts: 554
By shock I assume you mean impact. There are a number of MEMS sensors available for sample from Analog Devices (basically mini gyroscopes and inertia sensors) that ought to be able to do what you want. The only trouble with them is they aren't in particularly easy to use packages for us amateurs. Most of them are Ball Grid Array or something similar.
Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
Try a piezoelectric speaker or something similar. You can tune it by gluing things to it, mounting it in different ways or use a filter on the output. How well it will work depens on how you define "shock".
Registered Member #53
Joined: Thu Feb 09 2006, 04:31AM
Location: Ontario, Canada
Posts: 638
If you want an instantaneous response from an impact use a micro-switch (like the clicky pushbuttons from electronics). They stand up to considerable abuse and they are easy to find.
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
by shock, I mean am impact or force that does not need to be directly applied to the sensor... (e.g., it needs to be able to sense a baseball hitting a bat from the other end of the bat)... a piezo might work, but probably would be too sensitive...
Registered Member #193
Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
The speed of sound in a baseball bat is finite, a few Km/s depending on the material. You might not be able to get the picture you want without sensing the impact near where it takes place.
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Shock sensors:
