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Thread: OBD + GPS = POI files?

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    OBD + GPS = POI files?

    So I'm brand new here, but it occurred to me that there must be a thread around here somewhere that describes what would be required to take the output of OBDGPS and create a POI file for a GPS unit, in effect providing feedback to the driver about how to drive most effectively over that particular patch of road.

    I'm tweaking my 1996 F150 for maximum fuel economy while at the same time retaining its "working truck" capacity, and this capability would be helpful.

    As a demonstration, I hope to take the vehicle from San Diego, California to Jacksonville Beach, Florida with just one stop to refuel. It would mean close to doubling the EPA estimate for the truck!

  2. #2
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    first. welcome!

    Second, POI (Point of interest) files have nothing to do with what I think you are talking about here. What you want to do seems to be to get instant fuel economy reading from your car so that you can drive in such ways to improve you EPA. You can do this with an OBD-II scantool from the mp3car store and usually any OBD-II application installed on either your phone or a dedicated car computer of some sort.

    I wrote a simple app for meego that does this:

    Name:  screenshot10.png
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    Basically you drive in such a way as to make the circle as big and as green as possible. When you drop below your target economy however, the circle turns red indicating you better change your driving habits. You can set your "goal" economy with the slider.

    cheers,
    Former author of LinuxICE, nghost, nobdy.
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    Works on Tizen IVI. Does not represent anyone or anything but himself.

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    Quote Originally Posted by tripzero View Post
    POI (Point of interest) files have nothing to do with what I think you are talking about here.
    For my use, a POI file could have information about terrain features (elevation / grade) and road conditions (cracks in pavement, potholes, tar snakes) that are GPS specific and would help you drive for best fuel economy on a particular stretch of road.

    I've already got instantaneous fuel consumption information with my Scangauge.

    Thanks for your reply.

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    are you talking about creating these POIs using your obd + gps? I don't know of any data sets that exist right now that give you that level of detail about a road. POIs usually mark interesting spots on the map like starbucks. I imagine a dataset that covered every square foot of road in that detail would be a couple terabytes just for a given state.
    Former author of LinuxICE, nghost, nobdy.
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    Quote Originally Posted by tripzero View Post
    are you talking about creating these POIs using your obd + gps?
    Yes. People create POI files for just about everything, I'm told: Speed traps, traffic cameras, etc. This would just be one more combination.

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    Quote Originally Posted by lasitter View Post
    Yes. People create POI files for just about everything, I'm told: Speed traps, traffic cameras, etc. This would just be one more combination.
    I have found websites that offer elevation data based on a specific track. Using some simple hypermiling rules, one could show when to accelerate, when to brake, and when to turn off the car for maximum MPG. However, POIs for specific road conditions (cracks, bumps, etc..) just do not exist. I guess you could add an accelerometer to your truck and have it save anytime you hit a bump.

    I have online webservices that allow you to upload these POIs so that other people can use them, but as it is, they dont exist to use as of now.

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    Quote Originally Posted by ioi8 View Post
    I have found websites that offer elevation data based on a specific track.
    This would be a start. Any websites come to mind?

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    fka - Nextabyte_Matt ioi8's Avatar
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    Quote Originally Posted by lasitter View Post
    This would be a start. Any websites come to mind?
    Google offers this in their normal API http://blog.programmableweb.com/2010...tion-data-api/ It would be relatively easy to embed this into an app that tells you upcoming grades and how to use them for maximum MPG.

    You might also want to look at big rig truck mapping softwares. Not only do they show you how to get from A to B, they also take into account road grades, street lights, stop signs, speed changes, etc.... for maximum MPG and minimum travel time. However, I have no idea the cost or computer requirements of them.

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    This new google API looks like a great help in trip planning. Thanks.

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