1. Description of the Competition
Remote Operated Vehicle (ROV), also known asunmanned underwater vehicle, working under extreme circumstance of underwater, which can dive into the water to substitute human to complete the underwater operation. Owing to the harsh and dangerous underwater environment and human's diving depth limitation, underwater vehicle has served as an important tool for the ocean exploitation. The way it works is that the staff of the supported vessel provides power via connecting the ROV umbilical cable, operates or controls the ROV, observes through underwater monitor, sonar and other special equipments, and conducts underwater operations through the manipulator.
The Competition examines the underwater comprehensive operation ability of the ROV, including scouting the aquaculture area and feeding, inspecting the hull, collecting ores, and underwater precise operation of the seabed detection.
1.2 Venue & Site
Pool size: 10m×5m, depth from 1m-1.3m, as shown below:
Figure 1 Site Diagram
Figure 2 Schematic Diagram of the Layout of the Competition Site
1.3 Competition Requirements
A.Quantity: up to 1 (crawler walking is not allowed to avoid damaging the landform of the competition site)
B.The base weight of the vehicle is 20kg of net weight in the air(weight of umbilical cable is not calculated). If the weight is lower than 20kg, bonus points will be applied; if it exceeds 20kg, corresponding points will be deducted. The weight of the vehicle shall not exceed 25kg, otherwise it will not be allowed to participate in the competition.
C.Size: when the manipulator is retracted, the ROV shall be able to fit into a cube of 2000mm×1000mm×1000mm.
D.Number of Control Operators: no more than 2 persons.
E.Number of Umbilical Cable Operators: no more than 2 persons.
F.Time Limit: 10 minutes.
G.Control operators can not see the vehicle in the pool during operation.
2. Competition Tasks
2.1 Delivering feeds
There are aquaculture areas in the ocean ranch, where teams operate vehicles to cast feeds.
The feed container in the feed pick-up area is a 500ml plastic bottle, and the bottle is equipped with a counterweight, which exhibits a negative buoyancy of no more than 5N in water. Each feeding area is a cylindrical with a diameter of 125mm× height of 150mm, as shown in the figure.
Figure 3 Diagram of Feed Container (without the counterweight, the bottle of Green Ice Tea)
Figure 4 Diagram of Aquiculture Area
2.2 Inspection of Hull
Teams operate vehicles to inspect the underwater part of the hull, and clean up the damaged part of the hull.
2.2.1Inspecting the Hull and cleaning up the damaged part
The underwater part of the hull is a 1200mm×2400mm rectangle made of blue PVC pipes. The rectangle is divided into 6 areas by red PVC pipes with the diameter of 20mm. The areas are divided to be upper left, upper middle, upper right, lower left, lower middle and lower right. Each area is a rectangle of 600mm × 800mm. The schematic diagram of the hull is shown in the figure below.
Figure 5 Diagram of the Hull
There will be 6 damaged parts on the surface of the hull, which are represented by red(blue) plastic rings(three red, three blue). There is one damaged part in each area and the corresponding colors are shown in the figure above. During the inspection, the vehicle picks up the damaged part and hangs it into collection device of the same color. At the end of the competition, points are scored according to the correct colored rings retained.
The plastic ring is made of pneumatic pipe and bolts, which has less negative buoyancy under the water and it is placed at the bottom of the pool. The collection device is made of pipes with the diameter of 50mm, as shown in the diagram.
Figure 6 Diagram of Damaged Part(Plastic Ring)
Figure 7 Diagram of the Collection Device
2.3 Collecting Ores
Different types of ores (golf) are distributed in reef gaps. Teams control the ROV to collect ores and drop them into the collection cells about 300mm-550mm away from the bottom of the water.
Figure 8 Diagram of Reef Gaps
Figure 9 Diagram of the Collecting Cells
2.4 Precise Operation
The team operators control the ROV to remove the connector from the “elevator” first and then insert the connector into the seabed detector which is then started by the rotary switch. In this task, the interface of the seabed detector is set in three types: large, medium and small, and different types of interfaces are inserted to obtain different scores.
1.Obtaining the connector (T-plug with the length of 24cm and the width of 12cm) from the “elevator”
Figure 10 Diagram of the Elevator
Figure 11 Diagram of the Connector(T-plug)
2.Inserting the connector into one of the interfaces of the seabed detector(Small - medium - large: 30mm-60mm-90mm)
Figure 12 Seabed Detector Interface
3.Turning the rotary switch 180 degrees to start the seabed detector.
Figure 13 Rotary Switch
After completing all the tasks, the vehicle surfaces and the team claims the end of the competition. The referee stops the clock and the rest of the time is converted into additional points for remaining time.
The total score consists of operation scores completed within 10 minutes and bonus points. Additional points for remaining time can only be scored if all tasks are completed within 10 minutes. Grades are ranked by total score.
The attached schematic diagrams are for reference only, and the real props and facilities may be different.
The Competition Organizing Committee reserves the right of final interpretation.