AA Testing Procedures

Introduction

The final solution of the ROV frame must be integrated with the other systems of the ROV such as the mechanical arm, cameras and electrical steering. The frame must be as close to neutrally buoyant as possible, able to properly mount electronic systems, provide smooth steering, enough steering power to accommodate the weight of the ROV and be able to survive underwater conditions such as depth and pressure. The ROV frame must be able to steer with all the equipment on board smoothly and efficiently and provide a stable neutrally buoyant platform for the mechanical arm. Each area of testing involves the ROV frame, propulsion system and ballast. Team member Andrew Ahn will both administer testing and record and judge the results of testing. Majority of the testing will take place underwater in tanks and pools to simulate slight depth pressure.

Testing Type: Exploratory

Testing Stage: Preliminary

State of Solution: Drawing

Condition of Testing Stage: Conceptual
Conditions of Testing Area: on paper

Tools and Equipment Required: Paper, pencil, ruler, eraser and research notebook

Testing Procedures:
1. Review research and brainstorming materials
2. Draw/sketch alternative solutions
3. Post onto blog, bring into class for teacher assessment
4. Assess functionality, usability, ease of production and cost effectiveness

Testing type: Exploratory

Testing Stage: Secondary

State of Solution: Design matrix

Condition of Testing Stage: Conceptual
Conditions of Testing Area: On paper

Tools and Equipment Required: data table

Testing Procedures:
1. Construct a grid
2. Determine grid size using specs and limits and design solutions
3. Determine a rating scale
4. Rate each solution using a specific criteria
5. Add points together
6. Determine highest scoring solutions
7. Combine or move forward with best solutions

Testing type: Exploratory

Testing Stage: tertiary

State of Solution: model

Condition of Testing Stage: to scale (half scale)
Conditions of Testing Area: On paper

Tools and Equipment Required: 0.5 inch PVC piping and joints, Lego pieces and Lego propellers, foam pool noodles and 8 inch zip ties

Testing Procedures:
1. Acquire design solution 3
2. Measure half scale of design solution 3
3. Begin cutting PVC piping to half scale of design solution 3
4. Assemble base of ROV frame
5. Set three way joints to forty five degrees
6. Slip three inches of pool noodle onto PVC pipe which will go on wing structure
7. Assemble all PVC piping and joints according to design solution 3
8. Zip tie pool noodles onto PVC piping
9. Zip tie Lego parts onto PVC piping according to drawing

     

Testing type: Assessment

Testing Stage: Preliminary

State of Solution: Final Construction 

Condition of Testing Stage: Stationary
Conditions of Testing Area: Wet

Tools and Equipment Required: Ballast tanks, container of water

Testing Procedures:
1. Fill tub completely with water
2. Place the ballast tanks inside the tub
3. Allow ballast tanks to float for at least five minutes
4. Remove ballast tanks and shake contents
5. Listen for sound of water and check water tightness
6. submerge ballast tanks for at least five minutes
7. Repeat steps 4 and 5

Testing type: Assessment

Testing Stage: Secondary

State of Solution: Final Construction

Condition of Testing Stage: Stationary
Conditions of Testing Area: Wet

Tools and Equipment Required: ROV frame (no ballast), swimming pool

Testing Procedures:
1. Ensure ROV frame is properly glued and aligned
2. Place ROV frame into pool
3. Submerge ROV frame to bottom of pool depth for five minutes
4. Remove ROV frame from pool and check for water tightness of glue

Testing type: Assessment

Testing Stage: Tertiary

State of Solution: Final Construction

Condition of Testing Stage: Stationary
Conditions of Testing Area: Wet
Tools and Equipment Required: Fully assembled ROV frame, swimming pool

Testing Procedures:

1. Ensure ROV frame is properly glued, aligned, assembled and secured (ballast tanks)
2. Place ROV frame into pool
3. Let ROV sit in pool to ensure positive buoyancy
4. Submerge ROV frame using swimmer to the bottom of the pool
5. Remove ROV frame from pool and check assembly and water tightness
 

Testing type: Assessment

Testing Stage: Primary

State of Solution: Final Construction

Condition of Testing Stage: Stationary, on
Conditions of Testing Area: Dry

Tools and Equipment Required: 5 volt motors, wiring, arduino, designated power source

Testing Procedures:
1. Wire motors to arduino
2. Wire all components together
3. Turn on power
4. Ensure that drive shaft of motor is spinning

Testing type: Assessment

Testing Stage: Secondary

State of Solution: Final Construction

Condition of Testing Stage: Stationary, on
Conditions of Testing Area:Dry

Tools and Equipment Required: assembled propulsion systems wiring, arduino, designated power source

Testing Procedures:
1. Wire motors to arduino
2. Wire all components together
3. Turn on power
4. Ensure that propellers and drive shaft are spinning
5. Reverse polarity of current from the arduino
6. Ensure that propellers and drive shaft are spinning in opposite direction

Testing type: Assessment

Testing Stage: Tertiary
State of Solution: Final Assembly

Condition of Testing Stage: Stationary, on
Conditions of Testing Area: Wet

Tools and Equipment Required: Propulsion systems, wiring, arduino, designated power source, swimming pool

Testing Procedures:
1. Wire motors to arduino
2. Wire all components together
3. Submerge assembled propulsion system units into pool
4. Turn on power
5. Ensure that propellers and drive shaft are spinning properly and smoothly
6. Reverse polarity of  the current from the arduino
7. Ensure that propellers are spinning in opposite direction and smoothly
8. Turn off motors
9. Remove motors from pool
10. Ensure that water tightness and electrical wiring are not compromised
 

Testing type: Assessment

Testing Stage: Quaternary

State of Solution: Final Assembly

Condition of Testing Stage: Mobile, on
Conditions of Testing Area: Wet

Tools and Equipment Required: Assembled ROV frame (with propulsion systems), Swimming pool

Testing Procedures:
1. Wire all propulsion system units to arduino
2. Wire all components together
3. Place assembled ROV frame into water
4. Observe ROV, determine if ROV is positive or negatively buoyant
5. Submerge ROV to bottom of pool
6. Turn on motors, begin maneuvering ROV
7. Ensure that motors are smoothly operating
8. Stop motors
9. Reverse polarity of electrical current from arduino
10. Ensure that motors are smoothly operating
11. Turn off motors
12. Retrieve ROV
13. Check for water leaks, ensure ROV frame's water tightness is intact

 

Testing type: Validation

Testing Stage: Primary

State of Solution: Final Assembly

Condition of Testing Stage: Mobile, on
Conditions of Testing Area: Wet

Tools and Equipment Required: ROV frame, ROV mechanical arm, ROV cameras and electrical face, swimming pool

Testing Procedures:
1. Mount arm onto ROV
2. Place assembled ROV onto water
3. Determine buoyancy of ROV
4. Submerge ROV
5. Turn on mechanical arm
6. MECHANICAL ARM TESTING IN PLACE
7. ELECTRICAL SYSTEMS TESTING IN PLACE
8. Turn on propulsion systems
9. Maneuver arm and propulsion systems simultaneously

Testing type: Validation

Testing Stage: Secondary

State of Solution: Final Assembly

Condition of Testing Stage: Assembled, mobile and functional
Conditions of Testing Area: Wet

Tools and Equipment Required: Fully assembled ROV, screens, controller, swimming pool, testing site and simulation

Testing Procedures:
1. Set up testing site and simulation
2. Place ROV in water to ensure water security
3. Test cameras, arm and propulsion systems
4. Begin simulation by picking up rings and dropping them into crates underwater
5. Record any observations, problems and times

sample ROV challenge

Neptune Aquatic Center