[gps-talkusers] Re: unique GPS experiences
- From: "Kevin Chao" <g.unit89@xxxxxxxxxxxxx>
- To: <gps-talkusers@xxxxxxxxxxxxx>
- Date: Tue, 16 Oct 2007 13:56:48 -0700
Charles,
That is really a bummer that the reciever didn't capture the data
accurateley.
Do you suppose it has something to do with one of the following specs for
the Holux?
* Velocity: < 736 meters/ second (1000Knots)
* Acceleration: 4 G.
* Jerk: 20 meters / second, max
I am thinking that it might have to do with the max jerk of 20 M/s or
acceleration of 4G
Kevin
-----Original Message-----
From: gps-talkusers-bounce@xxxxxxxxxxxxx
[mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Charles LaPierre
Sent: Tuesday, October 16, 2007 11:14 AM
To: gps-talkusers@xxxxxxxxxxxxx
Subject: [gps-talkusers] Re: unique GPS experiences
Hello all,
Our GPS replay function really already does this record and play back GPS
tracks. It records everything the receiver is detecting to disk. Problem
is its only once per second so you may miss a lot of data. The data is time
stamped so you can do correlations after the fact. I did see a spike in
speed but no where near what we were actually doing. The max it registered
was 10 miles per hour where we were doing somewhere near 200. Also the
elevations went completely out of whack when we were flung off into the air.
So needless to say this is not the best device to monitor quick
accelerations / decelerations.
Charles.
At 11:03 AM 10/16/2007, you wrote:
>That's a really cool idea! I've seen a few mentions of trips and such
>but this is pretty cool. You could extend this to all sorts of
>experiences, skydiving comes to mind right off the bat. Does the
>Braille Note and Sindero GPS software have any way of capturing the
>navigation data and then either reporting it back (the trip taken) with
>time code or can I get output from a port and record? Time code would
>be really useful for applications like this. My car has telemetry
>(speed, RPM, G forces, air pressure and oxygen content, fuel burn
>rates, and so on). It would be cool to take the gps data, match it to
>my telemetry data which I capture on a laptop now and maybe some high
>quality microphones / recorders and record a race. You could play it
>back and you know here what the engine sounds like near redline in
>straight aways or measure the G forces when you're turning through the
>apex's and hear the sound of the gears snapping in and out. Combine
>that with GPS so you get road position. For example how does the car
>sound and perform breaking 180 on 280 south. This is a really cool
>application for the device and I bet a heck of a ride on that bungee
>platform. I tried it with a little less official approval off a
>bridge:) but we definitely didn't record the adventure. No need to
>make evidence gathering easier. Thanks for posting the idea and the
>recordings.
>
>
>----- Original Message ----- From: "Michael May"
><MikeMay@xxxxxxxxxxxxxxxx>
>To: "GPS-talkusers-freelists.org" <GPS-talkusers@xxxxxxxxxxxxx>
>Sent: Tuesday, October 16, 2007 4:03 AM
>Subject: [gps-talkusers] unique GPS experiences
>
>
>>Charles and I put the Sendero GPS to a unique test yesterday in
>>Auckland New Zealand. We were strapped into chairs on something called
>>the Sky Screamer. Charles zipped his PK and GPS into his coat and we
>>listened to the young gal count down from 10, hoping that she knew
>>what she was doing. After all, we had been hearing screaming outside
>>our hotel room for a couple days as people experienced the Sky
>>Screamer bungy ride.
>>
>>We were launched like a shot out of a cannon, reaching 200 kilometers
>>per hour. At the apex, the chairs flipped over and we plummeted toward
>>the pavement. Back and forth we went like that for about 45 seconds.
>>
>>You can hear a recording from the PK, albeit distorted, at
>>http://www.senderogroup.com/blog.htm along with some pictures.
>>
>>Charles hasn't yet loaded the replay to see if it calculates vertical
>>acceleration. You will hear the PK say arrived at destination during
>>our flight. Thank goodness for that.
>>
>>Mike
>>
>>
>>
>>Michael G. May
>>
>>CEO Sendero Group
>>
>>Crashing Through by Robert Kurson available at
>>http://www.CrashingThrough.com
>>
>>Developers and distributors of the first-ever accessible GPS
>>Distributing BrailleNote, VoiceNote, Talks, Miniguide and the ID Mate
>>bar code reader
>>
>>MikeMay@xxxxxxxxxxxxxxxx
>>http://www.SenderoGroup.com
>>
>>1-888-757-6810, Fax (530) 757-6830, Mobile (530) 304-0007 Sendero
>>Group, LLC
>>1118 Maple Lane, Davis, CA 95616-1723, USA
>>
>>Latitude, 38 33 9.239 North
>>Longitude, 121 45 40.145 West
>>
>
Charles M. La Pierre CTO
Sendero Group, LLC
Lat. 37 15' 25" N Lon: 121 53' 04" W
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