Event Details of the event ROBO-SUMO

1. ROBO~SUMO
Introduction
Robot Sumo competitions since their origin in Japan have from time to time
proved to be test benches for robotic platforms all over the world owing to the
real time constraints and time critical maneuver execution requirements. We,
roboVITics plan to bring a small piece of the pie to our neighborhood by going
ahead with the tradition and making this hugely popular event which has been a
fan favorite for years, a part of our robotics arsenal this year. Let the Battle
Begin!!!
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
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2. Problem Statement
Build a robot whose task is to push the opposing robot out of the circular ring or
out of the arena. It can push, throw, flip, drag, or otherwise move your opponent
out of arena in given time.
Different robots compete one‐on‐one against each other in a knock‐out
tournament. So one who has the strength and the mind to out play the opponent
others will emerge victorious.
And the game goes on with just a temporary successor, until you get to be the
"King of the Ring".
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
2

3. Robot Specifications
Dimensional specifications (Physical):
The robot can have maximum dimensions of
● Length: 35 cm
● Breadth: 35 cm
● Height: Participants’ choice
● Weight: Less than 5 kg
Control specifications:
The robot can be autonomous or manual(i.e.can be controlled by wired/wireless).
Power specifications:
● Power supply should be constrained to 24 volts DC.
● Robot may have power supply on board.
● There would be provision for 240 volts 50 Hz AC power supply. The
participants are supposed to bring their own extension cords if necessary.
Event Split Up
ROUND 1 : QUALIFYING ROUND
● The Qualifying Stage will be conducted on a Circular Sumo ring of 2m
diameter.
● The robot has to push a weight of 1.5 kg out of ring within a time limit of
2min.
● The weight of 1.5 kg can be achieved by using single or multiple blocks. It
depends solely upon the organizers. But the robot has to push the weight
all together (even though if there are multiple blocks), failing which will
lead to disqualification.
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
3

4. The robot has push a weight of 1.5 kg out of the outer circular ring
ROUND 2 : ONE ON ONE
● In this round, the robots try to avoid falling out or avoid being pushed out
by the opponent robot. The first robot that touches outside of the ring
loses the round.
● General rules and regulations of Robo-Sumo apply everywhere.
● The figure below explains when the robot will be considered out of the ring.
The round continues till any of the robots have their parts inside the
circular arena. As soon as any one of the robots moves out of the ring
completely, the round ends.
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
4

5. ROUND 3 : ROYAL RUMBLE
● All the teams which qualified the 2nd round will enter the third round.
● Groups of 4 teams will be made randomly.
● All the 4 teams of each group will compete with each other simultaneously
in the arena.
● Each team will be given at max 3 chances before being knocked out.
● Each royal rumble round will have only one winner.
● This process will go on until we have a supreme winner.
● General rules and regulations of Robo-Sumo apply everywhere.
Rules and Regulations
ROUND 1 : QUALIFYING ROUND
● The robot has to push the weight out of the outer ring of the arena.
● During this run, the robot should NOT go out of the circular ring in any case.
● In case when the robot moves out of the circular ring, the robot will be
considered disqualified.
● The robot has to push the weight all together (even though if the weight is
comprised of multiple blocks), or else the robot will be disqualified.
● A maximum time of 2 minutes will be given for each robot.
● Each robot can have only one run. There will not be any second or trail run.
ROUND 2 : ONE ON ONE
General Rules (Round 2)
● The robots have to fight one on one.
● Three rounds of 2 minutes each, is conducted for every match.
● A round ends when -:
- One of the bots is flipped over by the other bot.
- If a bot is pushed out of the arena.
- One of the bots falls out of the arena by itself.
- A bot is immobilized for more than 30 seconds.
● The participants are not allowed to touch the robot during the duel.
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
5

6. ● Coordinator reserves the right to change the duration of the rounds as
deemed fit on the day of the event.
● A time out of 1 minute will be given in between each of the 3 rounds. Any
team which is unable to fight again after 1 minute will be eliminated.
● If the robot crosses the boundary itself then it will be declared loser and the
opponent will be declared the winner for the round.
● If both the robots cross the boundary simultaneously then the one with the
minimum dimensions will be declared the winner.
● For winning a round the opponent should be completely put out of the
arena (outer circular ring). Mere touching the line will not result in losing
the match.
● Each stage eliminates the teams which lose and the remaining teams
continue to next stage. This is done perpetually to decide which teams
enter the next round.
● Ready-made assemblies/steering mechanism/gear drives/chassis are not
allowed.
● Ready-made PCBs and electronic circuitry are, however, allowed.
● Any damage caused to the arena will result in disqualification of the robot.
● Any discrepancies that may arise are solely solved by the organizers and it
remains final.
Game Play Rules (Round 2)
● Two robots compete in each bout, each trying to stay in the arena longer
than the other robot. Robots are encouraged but not obliged to actively
push their opponent out of the arena.
● At the beginning of each bout, the two robots are placed on opposite sides
of the arena, each lying (at least partly) over the white perimeter marking.
The robots are positioned so that a straight line joining them can pass
through the center point of the arena. The initial orientation of each robot
will be specified by the referee.
● The bout ends either when a robot leaves the arena or once 2 minutes have
elapsed, whichever occurs first.
● If only one robot remains in the arena at the end of the bout, that robot is
the winner.
● If both robots remain in the arena at the end of the bout, the robot having
more points (on the basis of immobilizing it i.e. 10 points for every 3
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
6

7. seconds) will be declared as winner. Immobilizing includes holding a robot
(but not lifting), flipping a robot, turning it etc.
● If at the end of the bout, both robots leave the arena, the robot which
leaves second (as decided by the judges) is the winner.
● If a robot remains immobilized for 30 seconds or more, it can be
disqualified at the discretion of the judges. This may include robots which
have moving parts, but are nonetheless immobilized (e.g. upside down).
● If both robots remain stationary for 10 seconds while in contact with each
other (i.e. locked in battle), both robots may be returned to their starting
positions at the judges' discretion. In this event, the timer for the bout will
not be reset.
ROUND 3 : ROYAL RUMBLE
General Rules (Round 3)
● Four robots will fight together in a single round.
● The robots will start from four different points on the perimeter such that
they are equidistant from each other initially.
● Each robot can be rendered as ‘kicked out’ of the round a maximum of
three times. After that that particular robot will be disqualified.
● Once being ‘kicked out’, the robot will be put to its initial starting position
on the perimeter.
● A robot will be ‘kicked out’ if
○ It is flipped over by another robot.
○ It is pushed out of the arena.
○ It falls out of the arena by itself.
○ It is immobilized for more than 30 seconds.
● Rest rules remain the same as those of the previous round.
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
7

8. Game Play Rules (Round 3)
● Four robots compete together in a bout.
● Each robot can be ‘kicked out’ a maximum of three times, after which it is
disqualified.
● There is NO time limit for this round. As soon as a robot is ‘kicked out’, it is
placed at its starting position immediately. This goes on till all the robots
are disqualified one by one and a winner emerges.
● A time out of 1 minute will be provided after every 2 minutes to all the
bots. Any team which is unable to fight again after 1 minute will be
eliminated.
● In case all the four teams are disqualified, there is NO winner for that
particular round.
● Rest rules are similar to the rules of the previous round.
These rules have been drawn up with thoughtful deliberation and in consultation
with the competitors. However, it is impossible for absolutely every eventuality to
be foreseen, so common sense may need to be applied. Therefore, in all matters,
the decision of the judges is absolutely final.
NOTE:
1. In all the case, the event coordinator’s decision will be the final.
2. The organizers can change the rules and regulations of the events any
time without the information of the participants. Any changes made
will be reflected online. It is the sole responsibility of the
participants to keep themselves updated. An updated version of this
Problem Statement will always be available online at
slideshare.net/roboVITics and events.robovitics.in/robosumo
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
8

9. Judging Criteria
The robots will be judged upon by the following rules:
● If a robot is immobilized, 10 points will be given to the opponent for every
three seconds of mobility.
● If a robot moves out of the arena or is flipped over by another bot, then the
opponent team gets 50 points.
● A robot is disqualified if it remains in state of immobility for more than 30
seconds.
● For Round 2, the team with more number of points at the end of all the
three rounds will be considered as the winner. In case both the teams have
same points, the team with smaller dimensions will be the winner.
● The awards will be decided only on the basis of the robot’s performance in
the third round.
● The first prize goes to the supreme winner.
● The second prize goes to the last robot which was defeated by the supreme
winner.
● The best design award goes to any one of the teams which reached the
third round. This will be decided by the organizers on the spot.
● The robot having on board power source (i.e. battery) will be given 10
points by default.
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
9

10. ROBO-SUMO arena
The arena consists of a smooth wooden surface, having a circular ring of inner
diameter of two meters as shown below. This is just for representation; the
actual arena may have slight modifications.
INNER CIRCLE IS OF DIAMETER – 2 METRES
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
10

11. Other Details
The following details are also worth noting:
● Date : February 11-12, 2012
● Time : 9 am - 5 pm
● Venue : Foodys, VIT University, Vellore
● Team Size - A maximum of four people can form a team together.
● Students of different branches and different year of study can form a team
together.
● This event is only for internal participation of VIT University, Vellore and
Chennai Campus.
● This event is brought to you by roboVITics club - The Official Robotics Club
of VIT
● Registrations OPEN!! Keep an eye on the registration desks.
● Registration Fee : I100 per team
● Prize Awards : Yet to be decided
○ First Prize - THE KING OF THE RING
○ Second Prize
○ Best Design Award
● Certificates will be provided to all the teams which qualify for the second
round.
Event Coordinators
● Shiwang Sagar +91 900 386 9698
● Mayank Prasad +91 978 978 0342
roboVITics club, VIT University, Vellore
Robo-Sumo Event Details v1.2
www.robovitics.in
Revised on Jan-30, 2012
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