network profile
|
Dec 3 |
comment |
Detecting “lack of movement” on GPS device Was that a comment or a question? :P Well, basically, aside from my friend finding some parameters for the movement sensor, we noticed there are very few readings of a vehicle left under a roof for the night where BOTH the movement sensor detected movement and the GPS reading had a non-0 speed. It's not perfect, but it was rare enough that we decided to go with it. Aside from that, well... like you said, every case is different. |
|
Nov 9 |
comment |
Detecting “lack of movement” on GPS device It's entirely possible my colleague has set up the number of visible satellites by mistake, rather than the number used for a fix (all I saw was an Excel sheet with data with column titles being filled out manually). :P In any case, as I wrote, the tuned motion sensor was our way out of this problem. |
|
Nov 9 |
comment |
Detecting “lack of movement” on GPS device The main problem is with vehicles which are stored in a shed of some sort for the night. I don't think it repeats the last know position, because vehicles WILL vanish completely if they enter / are stored in concrete garages (or anything more solid). The drop of satellites is an indicator, but it seems to be subtle and it turned out to be far easier to just tweak and use the motion sensor data. |
|
Oct 12 |
awarded | Nice Question |
|
Oct 11 |
comment |
Detecting “lack of movement” on GPS device Geofence might be useful... but not for this. If we were to outline the garages ourselves we'd go mad, and our clients probably won't want to do that either. We cannot rely on maps either, as these are mostly farming vehicles and as such, they work and are being kept outside of cities, so the maps aren't anywhere as precise. |
|
Oct 11 |
comment |
Detecting “lack of movement” on GPS device I do have to comment about the idea to collect voltages. It's excellent! We're having a fair bit of trouble with certain vehicles, and we're unsure why. We're currently suspecting it might be due to poor skills on part of the tech-guy who mounted the tracking devices which results in voltage problems, albeit it can also be sabotage (yes, sabotage; we're monitoring fuel levels and the drivers don't like that). If we can record the voltage on the tracking devices, that should help immensely. :) Huge thumbs up! (I'd give more than one, but sadly, I cannot...) |
|
Oct 11 |
awarded | Scholar |
|
Oct 11 |
awarded | Supporter |
|
Oct 11 |
accepted | Detecting “lack of movement” on GPS device |
|
Oct 9 |
answered | Detecting “lack of movement” on GPS device |
|
Oct 9 |
comment |
Detecting “lack of movement” on GPS device Since the vehicles are problematic when not moving whilst on parking lots or garages, this isn't at all useful. :( |
|
Oct 9 |
comment |
Detecting “lack of movement” on GPS device The GPS device returns a number of data with every sent packet, including position and current speed. We already have a system in place where, if the speed is lower than a certain value, we assume the vehicle is not moving, however thee are cases where a vehicle will send data with speeds over that threshold, despite being still (note: those speeds aren't THAT great that we could add an upper limit). I'm not sure if calculating the speed based just on positions (rather than the GPS reading) is a good idea. |
|
Oct 8 |
awarded | Editor |
|
Oct 8 |
comment |
Detecting “lack of movement” on GPS device I've edited my question to give more information. In short: the accelerometer is acting crazy, we have access to satellite count or quality info, but we're unsure how to use them, and yes, this is NOT a real-time detection issue. |
|
Oct 8 |
revised |
Detecting “lack of movement” on GPS device Added some answers to comments |
|
Oct 8 |
awarded | Student |
|
Oct 8 |
asked | Detecting “lack of movement” on GPS device |
|
Oct 8 |
awarded | Autobiographer |
