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Thread: Need help building a data logging carputer for formula SAE

  1. #11
    Newbie
    Join Date
    Aug 2010
    Posts
    1
    Hi, I am undertaking a project very similar to yours. Our FSAE car already has a MOTEC M400 equipped, however we wish to attach more sensors than the M400 can take and send information back via a wireless link.

    If you check out some RF (~900MHz frequency range) you can find gear that transmitts up to 32km at 115.2kpbs (not enough for video unfortunately...looking for alternatives though).

    My system will interface with the ECU via the can bus and extract sensor information from it, and also will extract sensor information from sensors directly attached.

    My sensor list is as follows (connected directly to my system):
    -3 axis accelerometer
    - 4 x suspension displacement
    - 12 x tyre temperature
    - 1 x steering rack position
    - 1 x GPS module

    The ECU has:
    -4 x Wheel Speed (Hall effect sensor)
    - Lamda sensor
    - oil temp
    - throttle position

    If you are still working on this project feel free to shoot me an email to share ideas.

    Cheers,
    Shannon

  2. #12
    Constant Bitrate
    Join Date
    Jun 2004
    Posts
    156
    Why do you need 12 tire temp sensors? Are you entering a big rig into formula SAE this year?

  3. #13
    Low Bitrate
    Join Date
    Sep 2008
    Posts
    99
    Quote Originally Posted by superart View Post
    Why do you need 12 tire temp sensors? Are you entering a big rig into formula SAE this year?

    Maybe he is monitoring temp in different areas of the tires. Sidewalls vs tread.

  4. #14
    Newbie eastcoastbumps's Avatar
    Join Date
    Mar 2005
    Location
    Central MA
    Posts
    17
    Quote Originally Posted by superart View Post
    Why do you need 12 tire temp sensors? Are you entering a big rig into formula SAE this year?
    Quote Originally Posted by Aberk View Post
    Maybe he is monitoring temp in different areas of the tires. Sidewalls vs tread.
    Its for monitoring the inside, center and outside parts of the tread. A tire will have much different temps running from the inside to the outside of the tread in a race condition. Temperature has a lot to do with the grip, and if a part of the tire is cold, its not being fully utilized and a suspension change needs to be made. And if its getting too hot, it may become greasy or start to grain or chunk. That's also an indication of a poor alignment.

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