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Use of Gyro/Accelerometer for Boat Tilt Application?

  1. May 15, 2015 #1
    Hello,

    I'm looking to try to use a gyroscope to determine the rocking motion (just side to side - not back and forth) of a boat while it is travelling forward or sitting still in the water. Specifically, I'm looking for the boat's angle from vertical and this angle's velocity. Can I do this with just a (2-axis, 3 axis?) gyroscope? Or would I need a gyroscope as well as an accelerometer? Any experience with mounting gyro devices?

    Thanks for your help :)
     
  2. jcsd
  3. May 16, 2015 #2
    The side to side movement is called rolling and the forward-aft is called pitching. Ships have been using gyros for this for a long long time.
    Every ship has it. Just buy it.
     
  4. May 17, 2015 #3
    Thanks for the reply. I do know that most ships have this, I wanted to know if just a 3-axis gyroscope will do it, or should I get something that also has accelerometers?
     
  5. May 17, 2015 #4
    Gyroscopes should give you the change of angle and acc.meters rate of change I think. If you are making one make it for all movement. Use a 3axis one. I'm sorry but I don't know much else about it.
    Level sensor apps on a smartphone can be reprogrammed to output on a scale. Though accuracy would be a concern
     
    Last edited: May 18, 2015
  6. May 21, 2015 #5
    You would probably opt for a so-called strap-down gyro (it's not really a gyroscope). Consumer grade are usually memes. They're far cheaper. Everybody calls them gyroscopes, but they deliver different spatial information. A single strap-down will tell you how much the boat has rotated about a given axis. For pitch and roll, you'll need a minimum of two single axis memes or a dual axis meme unit.
     
  7. May 22, 2015 #6

    Baluncore

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    Last edited by a moderator: May 7, 2017
  8. May 22, 2015 #7
    Thanks for the replies! I would prefer if the sensor could work as J1939 CAN interface. Do you know of any devices like this?
     
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