[Thumbgps-devel] quake sensing

[tz]

I would try to find some cheap outdated but commonly available Android
smartphone which would have both GPS and an Accelerometer, and would have
connectivity.  It might need to be plugged into the charger, but it would
have accurate time (from either GPS or the cellphone net, or even NTP), and
you could write a background service.  I don't know about sensitivity.

There are many ways to implement an inexpensive link - I had
GPS+Accel+vehiclebus+more going over bluetooth using an Arduino Pro, but
the DIY cost in parts was about $100 and was a bit of overkill (and I
learned that accelerometers don't like motorcycle vibration).

On Mon, Jun 4, 2012 at 9:09 AM, Dave Taht <dave.taht at gmail.com> wrote:

> I have obtained one of the onavi-B sensors to play with
>
> The quake sensor stanford is distributing is the
> onavi-A and onavi-B, shown here:
>
> http://qcn.stanford.edu/sensor-performance?lang=en
>
> It uses a KXRB5 MEMS accelerometer from Kionix.
>
> My intent, originally, was to see if I could find a way to combine
> it with a ublox GPS over the internal i2c bus. It looks
> like that will require using a different ublox-6 chip than in
> the macx-1 with rewritable firmware and a firmware license, and...
> well... maybe going some other route like leveraging
> an arduino would be saner(?)
>
> At the moment however, I'm trying to figure
> out if there are any better MEMS sensors out there, or
> better ways to hook them up than this device
> which appears to have it's own protocol, running over
> serial...
>
> http://qcn.stanford.edu/join-qcn/request-a-sensor/sensor49-php
>
> The qcn.stanford.edu idea is pretty neat. it's designed for boinc
> after the fact analysis (and there is linux support)
>
> The USGS has got a fairly decent looking prototype of an early warning
> system,
> but their outside estimates for warning time is 20 seconds, presently,
> after
> what they've designed is fully deployed. (and they are 100m short on
> funding)
>
>
> http://blogs.laweekly.com/informer/2012/04/earthquake_warning_los_angeles_usgs.php
>
>
> --
> Dave Täht
> SKYPE: davetaht
> http://ronsravings.blogspot.com/
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