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  • Detect Collision / Accident?

    I'm building out my CarPC now, and one thing I'd really like to integrate is a collision/accident detection system. I'd like to have two modes - One would be used while the car is parked and the other while the car is in motion.

    I see that the Fusion Brain has a 3-axis accelerometer, and I can get the same thing for Arduino. Do these actually work at detecting collisions? Do you have to run the sensor at a high frequency, and pick out the spikes - or is there some other detection hardware/software? A lot of car alarms have a "shock sensor", but I can't seem to find anyone who has connected one to an Arduino or Fusion Brain.

    Ideas?

  • #2
    check out the ultrasonic distance sensors, they would be a safer bet with collision detection. Of course, detecting in the amount of time it takes to do something about it is probably the trouble you'll run into.
    mp3Car.com Senior Tech Blogger (Want a product reviewed? Contact me.)
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    • #3
      I'm not looking to detect collisions that I can avoid

      I want to be able to leave the car parked somewhere, and have the computer text me if somebody hits my car (I've got a USB cell modem). While driving, the dash cam will be on, and if I am in an accident I would like to automatically save the video files in a location they won't be overwritten, or text someone, or call 911 or something.

      The triggering is all I'm worried about right now - the rest I know I can take care of.

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      • #4
        Well if you want parking mode support Arduino is the way go to, the fusion brain requires the PC to on.

        I have a Connect2Car system installed in my car, and it has the bump mode feature installed. It is set by an accelerometer too, so it would probably work for your case.

        It's funny that you brought this post up because over the last few weeks i've been in this "what cant I do with my arduino, and replacing the connect2Car is one of my top priorities. I'm thinking arduino, ethernet shield connected to a mobile router and supporting data plan. From there you could use web services like Rest (there's a library for arduino to utilize it) to send/receive messages to your cell, email, etc.
        mp3Car.com Senior Tech Blogger (Want a product reviewed? Contact me.)
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        • #5
          Yep, I'm thinking the same exact thing.

          Thanks for the info about the Fusion Brain needing the PC to be on - I didn't know that. I'm was leaning towards Arduino anyway, but that pretty much settles it for me.

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          • #6
            I have a small script that monitors your auto insurance policy, and notifies you via SMS if you rates spike due to an accident....if you think that would help.

            VegasGuy

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            • #7
              LOL - VegasGuy. Can that script be modified for domestic downlights? I was told that as of <certain date>, house insurance policies here-downunder will no longer cover fires caused by (halogen) downlights, BUT "they" aren;t going to tell anyone. I look forward to the first court cases (the insurance companies should lose).


              For proximity detection, I'd suggest microwave detectors as they can detect thru glass etc to a certain radius and should NOT trigger due to drafts (open windows) and loud (bass) noises etc.

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