I have used some accelerometers from Analog Devices which are quite easy to
interface and use.  They measure acceleration from DC up to around 1KHz, and
output a signal that is a couple of volts at the max acceleration for the
chip.  They come in various ranges from around +-2G to +-50G.  The 2G unit
is used in auto airbags so the price reflects the large volumes produced.  I
have a couple of samples that are in a SMT package about 1/4" square, that
are supposed to sell for a couple of dollars in thousands.

Oh, in case the accelerometer thing seems confusing, vibration is just AC
acceleration.

Check their website.

> -----Original Message-----
> From: rad0 [mailto:rden25@MINDSPRING.COM]
> Sent: Wednesday, May 30, 2001 12:37 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [ot]: how DO you maesure vibration ??
>
>
> Hey gents,
>
> I was just thinking about it, and I don't have any idea
> how a vibration sensor works?
>
> Anybody have some knowledge to share in this area?
>
>
>
> I was thinking about how airplane engine props can be
> balanced to reduce the vibration, and I was thinking of trying to
> build some sort of a vibration sensor, or hook one up anyway,
> to monitor electric motors, to indicate when they are approaching
> failure....
>
>
> thanks
>
> --
> http://www.piclist.com#nomail Going offline? Don't AutoReply us!
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>
>

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