Risk Analysis

  • Central Command & Control
  • Sonar & Navigation
  • Propulsion & Structure/Power
  • Vision

Central Command & Control

Risks

Contingency Plan

Percent Affect on

Sub

Humans
System Failure Extensive testing, using parts and components that are rated above their requirements
10% 10%
Code Errors or unexpected outputs
  • No open ended code structures during programming phase
  • Standard formatting of coding including clear legible commenting
  • Standardized labeling of sub-systems, procedures, component names and commands in coding environment
10% 10%
Hardware Error Duplicate code on motherboard complete with rerouting procedure in event of CCC board failure
0% 10%
Communication Error checking routine to ensure data integrity between subsystems and CCC Event handlers that can resend corrupted or lost data
0% 0%
Complete CCC failure Pass control to separate sub-systems designating priority levels to each subsystem to enable continuing of competition
0% 10%

Sonar & Navigation

Risks

Contingency Plan

Percent Affect on

Sub

Humans
One hydrophone fails Include backup code for operation with two hydrophones
15% 0%
More than one hydrophone fails Replace with backup hydrophone
35% 0%
Hydrophone(s) becomes loose Reattach hydrophone(s)
70% 0%
Hydrophone protective cage fails Reattach, with spare if needed
5% 0%
SONAR software fails Self-reset microchip
35% 0%
Circuit board components fail Replace component/board
5-35% 0%
Heading board fails Utilize information from propulsion history
15% 0%
Navigation software fails Self-reset microchip
15% 0%
Circuit board overheats Attach heatsinks
35% 10%
Circuit board breaks Solder/backup board/adhesive
40% 15%
Pin-out connectors fail Reattach connectors/electrical tape
35% 0%
Bradley connections/wires fail Reattach/backup bradley connectors
15% 0%

Propulsion & Power/Structure

Risks

Contingency Plan

Percent Affect on

Sub

Humans
Motor failure Extra motors/secondary software
100% 20%
Motor driver circuitry Extra circuit board
100% 20%
Cable damage Extra motors/secondary software
100% 20%
Mounting Extra mounting equipment
80% 15%
Software issue Secondary software
70% 0%
Motors not balanced Remove motor/add item to balanced motors
75% 10%
Control board Switch to motor control
70% 5%
Loss of power(batteries) Back-up batteries/charger
100% 5%
Water leaks into control box Back up box/extra sealing devices
100% 20%
Loose components/connectors Extra hardware/tools
80% 20%
Frame comes loose Extra hardware/tools for repair
90% 10%
Money grabber Extra grabber/try to make money attach to sub by general contact
30% 10%
Marker launch Extra marker board
30% 20%

Vision

Risks

Contingency Plan

Percent Affect on

Sub

Humans
Camera Failure Spare Camera for Replacement
70% 0%
CMUcam 3 Board Failure Spare Board for Replacement
70% 0%
AVR board Failure Spare AVR board for Replacement
70% 0%
Software Failure Back up coding on the CMUcam3 board that can be routed to CCC
30% 0%
Camera Mount Failure Extra Mounting Stability to sustain any extra movement, bumping, etc.
25% 0%