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Competition Goals

Goal/objective of the project

The goal of the LeTourneau Autonomous Robotic Competition (LARC) senior design team is to design and build an autonomous robot to enter into the 2015 IEEE Region 5 Robotics Competition. The competition is held at the annual Green Technologies conference with the goal of bringing academic, industrial, and other areas together to focus on environmental issues. The robot must comply with the competition rules, and the robot must complete the task 100% autonomously.

 

Robot Restrictions

The following restrictions are required for all robots that enter the competition:

  1. Entries must be completely autonomous and self-contained.
  2. The robot is not allowed to communicate with any device or being during the round.
  3. The maximum dimensions are only restricted to a maximum height of 7.5.”  However, it is recommended that the robot be no larger than 7” W x 7” L to better navigate the maze.
  4. An easily accessible, easily identifiable start/stop button must be provided for the judges to initiate the round.
  5. The robot must have multiple LEDs to signal its progress in each round.
  6. The robot must have a USB drive for the purpose of storing hidden characters and their locations.

 

Scoring Rules

Challenge: The challenge has two parts in each round. The robot must perform part 2 immediately after part 1. A team member shall have 1 minute to set their robot before each run.

Part 1 - The robot searches the maze to find the shortest (critical) path from start to end within a fixed time limit for each round. During the search, the robot scores points by entering new squares and by identifying easter eggs. Easter eggs are symbols on the walls. They may be letters, numbers, or other special characters. Identifying and reporting easter eggs earns points in the qualifying and final rounds and additional time bonuses are also earned in the final round (see scoring).

Part 2 - If the robot completes the maze in part 1 within the allotted time (i.e. the robot makes it to the end cell of the maze) and then lights a red LED, the robot will be allowed a critical path run. In the critical path run, points will be awarded for correct moves along the critical path and deducted for moving off the critical path.

Scoring - Qualifying rounds (1, 2, 3)

  • Entering new squares (part 1): +1
  • Correct critical path moves (part 2): +2
  • Lighting a correct light (red or green): +1
  • Repeating a path move (both parts): -1
  • Touching wall (both parts): -1 max penalty per square
  • Moving off critical path (part 2): -1
  • Easter egg – numerical: +1
  • Easter egg – alphabetical: +2
  • Easter egg – other symbol: no score except “Perfect Score Challenge +1”

Scoring - Final

  • Adjusted critical path (part 2) execution time: Winning criterion
  • Search path (part 1) execution time: 2nd tiebreaker criterion
  • Entering new squares (part 1): +1
  • Correct critical path moves (part 2): +2
  • Lighting a correct light (red or green): +1
  • Repeating a path move (both parts): -1
  • Touching wall (both parts): -1 max penalty per square
  • Moving off critical path (part 2): -1
  • BTB – Bonus time base: Fastest critical path time in finals
  • Easter egg – numerical: +1 plus 5% of BTB off critical path time
  • Easter egg – alphabetical: +2 plus 15% of BTB off critical path time
  • Easter egg – other symbol: no score

Robots will advance to the final round based on their success in the qualifying rounds. Qualifying round 1 is a 5x5 maze. Qualifying round 2 is a 6x6 maze. Qualifying round 3 is a 7x7 maze with a few speed bumps. The final round is a 7x7 maze with more speed bumps than the third qualifying round. To determine the winner of the final round there are specific tiebreaker rules outlined below.

Ranking criteria – Winning criteria and successive tie breakers

  1. Lowest adjusted time for execution of critical path in finals
  2. Highest scoring (points) of all critical path attempts in finals
  3. Lowest adjusted time in finals search path run
  4. Highest combined point total in finals round
  5. Highest combined point total in all rounds
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