PSN-L Email List Message

Subject: Designing a new vertical sensor
From: "tchannel" tchannel@............
Date: Tue, 31 Mar 2009 09:27:30 -0600


Hi Folks,  With the help of the PSN group, I have made several different =
sensors.   At least one sensor for each concept I have seen.  From all =
the designs, my favorite is a simple Vertical.   It is a long spring =
with a mass, magnet and coil.   This approach has been my best sensor.   =
It is limited by its period, 1.5 seconds but it is very sensitive, easy =
to build and nothing to maintain.   It records all the earthquake, near =
and far, big and small.   However it could be better.

I know there are many approaches, but I wish to build another vertical, =
starting with this design and improving it.   I would like to correspond =
with someone interested in helping me.   Before I begin we could review =
the design and look at ideas on how to enhance the various parts.   I =
would like someone's opinion as to what to expect =
if:................."What If I doubled the mass"?.............."What if =
I doubled the magnets"?
"How could I reduce the noise"?  etc.

Free time is in short supply, and I understand, but email me if =
interested.   I can do all the work, I think, but could use some =
direction, rather than a series of trials and errors.








Hi Folks,  With the help of the = PSN group, I=20 have made several different sensors.   At least one = sensor for=20 each concept I have seen.  From all the designs, my favorite is a = simple=20 Vertical.   It is a long spring with a mass, magnet and=20 coil.   This approach has been my best sensor.   It = is=20 limited by its period, 1.5 seconds but it is very sensitive, easy to = build and=20 nothing to maintain.   It records all the earthquake, near and = far,=20 big and small.   However it could be better.
 
I know there are many approaches, but I = wish to=20 build another vertical, starting with this design and improving = it.  =20 I would like to correspond with someone interested in helping = me.  =20 Before I begin we could review the design and look at ideas on how = to=20 enhance the various parts.   I would like someone's opinion as = to what=20 to expect if:................."What If I doubled the = mass"?.............."What=20 if I doubled the magnets"?
"How could I reduce the noise"? =20 etc.
 
Free time is in short supply, and I = understand, but=20 email me if interested.   I can do all the work, I think, but = could=20 use some direction, rather than a series of trials and = errors.
 
Thanks, Ted

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