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pablof

9 Posts

Posted - 08 juin 2012 :  21:45:15  Show Profile  Reply with Quote
Hi all,

My server receive the message below from the tk-102 by GPRS (Imei substituted by XXXX).

imei:XXXXXXXXXXXXXXXX,tracker,1206081637,,F,193729.000,A,1249.9238,S,03816.1788,W,0.01,303.36;

What meaning of the fields?

Thanks,

Pablo

Edited by - barbudor on 09 juin 2012 18:56:03

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barbudor

France
1579 Posts

Posted - 08 juin 2012 :  22:19:07  Show Profile  Visit barbudor's Homepage  Reply with Quote
Looks like Coban TK102 protocol
http://www.gpspassion.com/upload2/Coban%20TK102%20GPRS%20data%20protocol.xls

Edit: now also on Google Drive:
https://docs.google.com/spreadsheet/ccc?key=0AtQofkYKWsMudDVHTi1ZNjI4emxlTVlhc3V1RWpsc0E

Modérateur Forum Traceurs GPS et Suivi GPS Temps Réel, son Index (français) et Les bons plan SIM pour traceurs GPS
Moderator Forum Live GPS Tracking Systems and its Index (english)
CartoExploreur3D | OziPC+OziCE(iPaq314) | TTGoLive950 | Carminat TomTom Live | Tracker Coban GPS-102

Edited by - barbudor on 01 déc. 2012 11:11:13
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pablof

9 Posts

Posted - 09 juin 2012 :  14:42:43  Show Profile  Reply with Quote
Hi barbudor,

Thanks by response, but this file not has the description for each fields.

Pablo

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barbudor

France
1579 Posts

Posted - 09 juin 2012 :  18:55:32  Show Profile  Visit barbudor's Homepage  Reply with Quote
imei:XXXXXXXXXXXXXXXX, your IMEI
tracker, this is position message
1206081637, UTC Date and Time : YYMMDDHHMM
, not identified, always saw this one as empty
F, F:Fix (GPS is locked and has position) L: Lost (GPS is unlocked)
193729.000, Time : HHMMSS.mmm Probably local time. Have you configured a time-zone ? I haven't and in my case this is also UTC
A, not identified, always saw this one as "A"
1249.9238,S, 12° 49.9328' South
03816.1788,W, 003° 16.1788' West
0.01, speed in notch (nautic miles per hours)
303.36; This one is empty on my tracker. May be altitude ? feet or meters ?

Are you sailing ?
This is in 1500 km west of Angola shores
So definitively not 303 m height !

Modérateur Forum Traceurs GPS et Suivi GPS Temps Réel, son Index (français) et Les bons plan SIM pour traceurs GPS
Moderator Forum Live GPS Tracking Systems and its Index (english)
CartoExploreur3D | OziPC+OziCE(iPaq314) | TTGoLive950 | Carminat TomTom Live | Tracker Coban GPS-102
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pablof

9 Posts

Posted - 10 juin 2012 :  04:23:31  Show Profile  Reply with Quote
Edit moderator: Please do not quote the message just above. Thanks.

Hi barbudor!! Thank you very much!!

Unfortunately I'm not sailing... The position is wrong, and maybe you can help me.
My tracker always send the same coordinates, all the time. Do you know how solve this?

Regards,


Edited by - barbudor on 10 juin 2012 10:02:07
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barbudor

France
1579 Posts

Posted - 10 juin 2012 :  10:06:08  Show Profile  Visit barbudor's Homepage  Reply with Quote
Have you left the tracker out on open sky for a few minutes ?
How are the leds flashing ?
On my Coban TK102, the leds flash as below :
- 1 sec period, half on, half off : powering up, no GSM network, no GPS
- 2 sec period, 1 short pulse on : GSM network ok, but yet GPS satellites
- 2 sec period, 2 short pulses : both GSM and GPS ok

Modérateur Forum Traceurs GPS et Suivi GPS Temps Réel, son Index (français) et Les bons plan SIM pour traceurs GPS
Moderator Forum Live GPS Tracking Systems and its Index (english)
CartoExploreur3D | OziPC+OziCE(iPaq314) | TTGoLive950 | Carminat TomTom Live | Tracker Coban GPS-102
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pablof

9 Posts

Posted - 10 juin 2012 :  14:15:44  Show Profile  Reply with Quote
Yes, i put the tracker on open sky. I turn off and turn on but the coordinates are still wrong (and the same).

The "check" command return:

GPS: OK
GSM: 100%

Any idea?

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barbudor

France
1579 Posts

Posted - 10 juin 2012 :  14:20:18  Show Profile  Visit barbudor's Homepage  Reply with Quote
Are coordinates wrong in both SMS and GPRS ?

Modérateur Forum Traceurs GPS et Suivi GPS Temps Réel, son Index (français) et Les bons plan SIM pour traceurs GPS
Moderator Forum Live GPS Tracking Systems and its Index (english)
CartoExploreur3D | OziPC+OziCE(iPaq314) | TTGoLive950 | Carminat TomTom Live | Tracker Coban GPS-102
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pablof

9 Posts

Posted - 11 juin 2012 :  02:36:15  Show Profile  Reply with Quote
Hi

The cordinates are wrong only in GPRS.
Any idea?
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barbudor

France
1579 Posts

Posted - 11 juin 2012 :  16:07:24  Show Profile  Visit barbudor's Homepage  Reply with Quote
No. That sounds very strange. If the unit has the right coordinates for SMS, why does it mess it up for the GPRS ?

I just noticed that I made a mistake when converting the coordinates
Are you in Brazil ?
12° 49.9328' S 38° 16.1788' W

Modérateur Forum Traceurs GPS et Suivi GPS Temps Réel, son Index (français) et Les bons plan SIM pour traceurs GPS
Moderator Forum Live GPS Tracking Systems and its Index (english)
CartoExploreur3D | OziPC+OziCE(iPaq314) | TTGoLive950 | Carminat TomTom Live | Tracker Coban GPS-102
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pablof

9 Posts

Posted - 11 juin 2012 :  19:48:15  Show Profile  Reply with Quote
Yes, this is very strange.
I did several tests, but on GPRS always get wrong coordinates.
A curiosity, the difference between the distances is about 60Km (by car)

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barbudor

France
1579 Posts

Posted - 11 juin 2012 :  21:52:33  Show Profile  Visit barbudor's Homepage  Reply with Quote
Could you be more precise and give me an exact sample of both SMS and GPRS coordinates for the same location ?
It may be a conversion error in the interpretation of the results.

Modérateur Forum Traceurs GPS et Suivi GPS Temps Réel, son Index (français) et Les bons plan SIM pour traceurs GPS
Moderator Forum Live GPS Tracking Systems and its Index (english)
CartoExploreur3D | OziPC+OziCE(iPaq314) | TTGoLive950 | Carminat TomTom Live | Tracker Coban GPS-102
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pablof

9 Posts

Posted - 11 juin 2012 :  22:02:57  Show Profile  Reply with Quote
Ok,

At this moment i received this message by GPRS (IMEI omited):

imei:XXXXX,tracker,1206111653,,F,1953556.000,A,1249.9265,S,03816.1698,W,0.94,319.62;

Some minutes later, by SMS:

lat:-12.832103
long:-38269489
speed:0.56
T:12/06/11 17:00
bat:100%
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pablof

9 Posts

Posted - 11 juin 2012 :  22:04:12  Show Profile  Reply with Quote
quote:
Originally posted by pablof

Ok,

At this moment i received this message by GPRS (IMEI omited):

imei:XXXXX,tracker,1206111653,,F,1953556.000,A,1249.9265,S,03816.1698,W,0.94,319.62;

Some minutes later, by SMS:

lat:-12.832103
long:-38.269489
speed:0.56
T:12/06/11 17:00
bat:100%



Fixing the dot on "long"
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barbudor

France
1579 Posts

Posted - 11 juin 2012 :  22:20:57  Show Profile  Visit barbudor's Homepage  Reply with Quote
Pablof

these are the same coordinates :
Lat : 12° 49.9265' = 12° + 49.9265/60 = 12.832108°
Lon : 38° 16.1698' = 38° + 16.1698/60 = 38.269497°

The difference between the 2 coordinates is below 1 meter.
http://boulter.com/gps/#-12.832103%20%20%20-38.269489
http://boulter.com/gps/distance/?from=-12.832108+-38.269497&to=-12.832103+-38.269489&units=k

So no problems with the tracker but only with your formulas

Modérateur Forum Traceurs GPS et Suivi GPS Temps Réel, son Index (français) et Les bons plan SIM pour traceurs GPS
Moderator Forum Live GPS Tracking Systems and its Index (english)
CartoExploreur3D | OziPC+OziCE(iPaq314) | TTGoLive950 | Carminat TomTom Live | Tracker Coban GPS-102
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pablof

9 Posts

Posted - 12 juin 2012 :  12:46:11  Show Profile  Reply with Quote
Oh... how i did not see this?
Thank you very much, problem solved!

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