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Need help for my robotics project — Parallax Forums

Need help for my robotics project

ArchiverArchiver Posts: 46,084
edited 2001-01-06 13:49 in General Discussion
Hi all,
Well, I am a final year B.E. student in Electronics and I am
doing my final year project based on the Basic Stamp2. It is a black
line-following robot and I want to know if it is possible for the
robot to go around an obstacle and come back to the black line.
Besides this, my project guide is hell bent on knowing the
applications for this project. I have told him that it can be used
where it is not practical or it is expensive to use conveyor belts
(if the robot is built on a larger scale, of course) but he is not
satisfied. Please help .

Venkatesh Kanchan.

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2001-01-06 07:47
    At 1/6/2001 Saturday 06:12 AM +0000, v_s_kanchan@y... wrote:
    >Hi all,
    Hi Venkatesh -

    > Well, I am a final year B.E. student in Electronics and I am
    >doing my final year project based on the Basic Stamp2. It is a black
    >line-following robot and I want to know if it is possible for the
    >robot to go around an obstacle and come back to the black line.

    The following presumes the obstacle has already been sensed, and the
    robot merely needs to avoid it.

    Generally this is done in one of two ways:

    Pure trial and error - where the robot goes forward and reverse, left and
    right until the black line is found again. This is often called the
    "Wandering Drunk" problem, for somewhat obvious reasons. There is no rhyme
    or reason to it, it just keeps wandering until it finds "home". "Home" is
    merely the goal. The goal here, is being able to find the black line again.
    This takes very little code, is quite inefficient but uses no other parts.

    Intelligent wandering - where additional sensors are used to guide the
    robot around the obstacle. An example of one which reads signs (bar codes)
    can be
    found here: [noparse][[/noparse]
    http://design.me.metu.edu.tr/robot/RobotS/LineFollowingSign.htm ].
    This shows one method, where signs are placed along the Robots path to assist
    in knowing where it is. Here is another which uses multiple sensors which
    are called far and near. The article is here: [noparse][[/noparse]
    http://www.dprg.org/nl_july97.html ]

    >Besides this, my project guide is hell bent on knowing the
    >applications for this project. I have told him that it can be used
    >where it is not practical or it is expensive to use conveyor belts
    >(if the robot is built on a larger scale, of course) but he is not
    >satisfed. Please help .
    Line seeking robots are used in warehouse situations. often for pick and
    pack applications. The robot will traverse the warehouse floor, generally
    following
    an embedded cable. The cable emits an RF frequency which guides the robot.
    Here too. the robot often reads signs; those at the ends of the aisles.
    When it finds the correct aisle, it goes down the aisle and finds the
    proper shelf and bin.

    I hope that helps

    > Venkatesh Kanchan.

    Regards,

    Bruce Bates
  • ArchiverArchiver Posts: 46,084
    edited 2001-01-06 13:42
    Hi Bruce,
    Thanks a lot for your suggestion. I shall
    definitely implement it. As for the application, youi
    mentioned about the embedded cable while I am in
    search of an application for the black line. Please
    reply if possible. Thank You once again.
    Venkatesh Kanchan


    --- Bruce Bates <bvbates@u...> wrote:
    > At 1/6/2001 Saturday 06:12 AM +0000,
    > v_s_kanchan@y... wrote:
    > >Hi all,
    > Hi Venkatesh -
    >
    > > Well, I am a final year B.E. student in
    > Electronics and I am
    > >doing my final year project based on the Basic
    > Stamp2. It is a black
    > >line-following robot and I want to know if it is
    > possible for the
    > >robot to go around an obstacle and come back to the
    > black line.
    >
    > The following presumes the obstacle has already been
    > sensed, and the
    > robot merely needs to avoid it.
    >
    > Generally this is done in one of two ways:
    >
    > Pure trial and error - where the robot goes forward
    > and reverse, left and
    > right until the black line is found again. This is
    > often called the
    > "Wandering Drunk" problem, for somewhat obvious
    > reasons. There is no rhyme
    > or reason to it, it just keeps wandering until it
    > finds "home". "Home" is
    > merely the goal. The goal here, is being able to
    > find the black line again.
    > This takes very little code, is quite inefficient
    > but uses no other parts.
    >
    > Intelligent wandering - where additional sensors are
    > used to guide the
    > robot around the obstacle. An example of one which
    > reads signs (bar codes)
    > can be
    > found here: [noparse][[/noparse]
    >
    http://design.me.metu.edu.tr/robot/RobotS/LineFollowingSign.htm
    > ].
    > This shows one method, where signs are placed along
    > the Robots path to assist
    > in knowing where it is. Here is another which uses
    > multiple sensors which
    > are called far and near. The article is here: [noparse][[/noparse]
    > http://www.dprg.org/nl_july97.html ]
    >
    > >Besides this, my project guide is hell bent on
    > knowing the
    > >applications for this project. I have told him that
    > it can be used
    > >where it is not practical or it is expensive to use
    > conveyor belts
    > >(if the robot is built on a larger scale, of
    > course) but he is not
    > >satisfed. Please help .
    > Line seeking robots are used in warehouse
    > situations. often for pick and
    > pack applications. The robot will traverse the
    > warehouse floor, generally
    > following
    > an embedded cable. The cable emits an RF frequency
    > which guides the robot.
    > Here too. the robot often reads signs; those at the
    > ends of the aisles.
    > When it finds the correct aisle, it goes down the
    > aisle and finds the
    > proper shelf and bin.
    >
    > I hope that helps
    >
    > >
    > Venkatesh Kanchan.
    >
    > Regards,
    >
    > Bruce Bates
    >
    >
    >
    >


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  • ArchiverArchiver Posts: 46,084
    edited 2001-01-06 13:49
    In a message dated 01/06/2001 1:01:56 AM Mountain Standard Time,
    bvbates@u... writes:

    << Line seeking robots are used in warehouse situations. often for pick and
    pack applications. The robot will traverse the warehouse floor, generally
    following
    an embedded cable. The cable emits an RF frequency which guides the robot.
    Here too. the robot often reads signs; those at the ends of the aisles.
    When it finds the correct aisle, it goes down the aisle and finds the
    proper shelf and bin. >>

    Anyone have a schemtic of a embeded wire following robot? I would like to
    figure out a way to do this.
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