Mars Exploration Robotics Mission

Mars Exploration Robotics Mission

1. Constraints/limitations

   • Sensor limitatoins
     • Touch sensor
       • Can only detect when button is pressed fully in
         • Robot has to be positioned directly infront of object in order for the button to go fully in
         • Wont detect slanted surfaces
       • Sensor location
         • Can only detect objects on the side where it it located
         • Wont detect smaller objects
     • Colour sensor
       • Reflected Light Intensity Mode
         • Incorrect colour/light detection
         • Can be affected by shadows
       • Faulty
       • Structure
         • Sensor Locations
           • Can only detect colours on one side of the robot and any colurs that are directly underneath it
         • Only faces downward
           • Can only detect colours on one side of the robot and any colurs that are directly underneath it
             • NO COPYING
       • Incorrect colour/light detection
       • Can only detect certain colours
     • Ultrasonic sensor
       • Inaccurate
       • Cannot detect things further than 100cm
     • Doesnt include other sensors
       • Sound sensor
       • Weight sensor
     • Gyro sensor
       • One sensor can only detect in two directions at a time
   • Robotic structure
     • Sensor locations
       • Sensors cant detect all across the robot
     • Big, recangular
       • Cannot fit in smaller gaps
   • Robot course limitations
     • Dirty and old
       • Incorrect colour/light detection
     • Singular, thin line
   • Coding limitations
     • Limited acessibility
       • Unavailable block functions
   • User environment
     • User skill level
       • Customisations
         • Self-determined Criteria
     • Time constraints
       • 4 week time limit to complete project
       • Limited duration to experiment and test code
       • Time spent for other purposes instead of completing project
     • User interface
       • User interaction options
       • Visual display
       • Ability to access needed materials
         • Required obstacles for course
           • Moveable object with desired dimensions and colour
           • Immoveable object with desireable dimensions and colour
         • Technology access
           • Program/Software
           • Computer/laptop
           • Videos/pictures
           • Websites

2. Functional Requirements

   • Must complete obstacle course
     • Move the moveable object to antoehr place and return back to line
     • Must go around immoveable object and return back to line
     • React to colours/light intensity
       • Must aways follow the black line until the end or when moving around obstacles
       • Start on the green
       • Turn on green squares
       • Finish program at the red (after dance)
       • Go straight on Grey

3. Ideation

   • Algorithm ideas
     • Seperate events
       • Colour Detection
         • "If green is detected turn right"
         • Following the line
           • "If black is detected go right"
           • "If white is detected go left"
         • "If grey is detected:"
           • If detect green go forward"
             • "Else stop moving and exit this stack"
       • Obstacle avoidance
         • Immovable object
           • Repeat 3 times - "If object is detected turn left, move forward"
         • Moveable object
           • "If sesnor detects object <10cm away then"
             • "Turn arm motor 170 degrees clockwise/anticlockwise"

4. Available resources

   • Technology
     • Computers
       • Internet
         • Websites
         • Videos
         • Pictures
       • Coding software
     • EV3 Robot
   • Stimulus
     • Robo cup' challenge requirements

5. Non-Functional Requirements

   • Robot related Non-functional requirements
     • Displaying a Happy face when following the line
     • Diplay a sad face when an object is detected
     • make a "moving" sound when going through the course

6. Criteria Requirements

   • Self-determined criteria
     • Do a robot dance when course is completed
     • Make a beeping noise when reversing or detecting an object infront
     • The robot should complete the course withing 5 minutes
   • Perscribed Criteria
     • Follow the Path
     • Detect and Navigtate around immooveable objects
     • Detect and clear the moveable object from the path