Project: P08371 Portable Command Post Rick Chadwick ME Harith Wijetungage IE Scott Pudlewski EE Sponsors: Technet Global Services DiLorenzo Electronics

Project Overview: Needs:  The customer is seeking a system that will display Pictometry aerial images.  The system will be: self contained highly connective lightweight, portable Rugged easy to use economical. P08371 Portable Command Post

Project Overview: Design Specifications:  Will have multiple 3-4 Network Connections  Budget $ $3800  Target Weight Pounds  Battery Life Hours  Usable while being transported Backpack  Hard Drive > 500GB P08371 Portable Command Post

Solution Concept: Semi ruggedized laptop computer  Internal Laptop HD packaged in an external enclosure Nexus Hawk router Weatherproof Enclosure  Cordless Mouse/thumbwheel  Display goggles P08371 Portable Command Post

Electrical System Computer - Lenovo Thinkpad R61  Rugged without exorbitant cost  Low power consumption Nexus Hawk Router  Redundant WAN networks  VPN  GPS Ultralife Lithium Ion Battery  Very High Power density  Meets Military Specs  Power Meter on Battery P08371 Portable Command Post

Power System Features: Will accept 120V AC or 12V DC power  Convert input to 12V DC  Internal relays switch automatically from AC to DC inputs to prevent system damage Charges battery while plugged in  Relay disconnects battery from system allowing charger to function properly Distributes power through system  12V DC to 20V DC used to power laptop Alarm will sound when battery becomes low on power P08371 Portable Command Post

Electrical Power Schematic: P08371 Portable Command Post 120V AC to 12V DC Charger Battery 12V DC to 20V DC AC in DC in Pressure Switch to Lid. Switch closed when case is open Router out PC out Fan out Pressure Switch to Lid Relay 1 Relay 3 Relay 2 Relay 4 Thermal Switch

Mechanical System: SK 3I B Case  Rugged, Waterproof  Best Size Fit  Low Cost  Lightweight Backpack Harness System Electrical Pass-Throughs  USB: Qty 2  AC Power, Standard PC power supply cord  DC Power, Standard shell 2 pin connector  VGA  Ethernet P08371 Portable Command Post

Mechanical System: Features:  Self Contained  Water Resistant  Usable While Closed  Non-Critical High Heat Generation Devices Power Down When Case is Closed  Cooling System Operates While Case is Open  Can Be Carried On Back P08371 Portable Command Post

Case Layout: P08371 Portable Command Post

Projected Measurables: Cost: Retail Parts Cost:  $4300 Build Cost:  $2600 Current Weight  27 Pounds P08371 Portable Command Post

Risks: Power  Risk: None of the team members have any education or experience with setting up and using power systems.  Mitigation Effort: Engineering professors were consulted during the design of the system. Existing designs were evaluated to determine any similar issues which this system could experience. Thermal  Risk: The components in the case will generate a great deal of heat which will not be dissipated while the case is closed.  Mitigation Effort: A cooling fan has been added to the case that will circulate air while the case is open. Additionally, the AC/DC adapter for powering the system will be disabled if the case is closed. Components that do not already contain thermal overload shut-down features may be placed on separate overload circuits. Financial  Risk: There is no commitment of funding from the main project sponsor.  Mitigation Effort: Additional sponsorships will be sought from the vendors of system components. Parts availability  Risk: Hard Drives with ½ Terrabyte capacity are not due to be available until March  Mitigation Effort: A suitable 320 GB hard drive has been chosen if the larger capacity remains unavailable P08371 Portable Command Post

Testing Plan: P08371 Portable Command Post

Project Status: P08371 Portable Command Post Phase 0: Planning Phase 1: Concept Development Phase 2: System Level Design Present State: Phase 3: Detail Level Design Phase 4: Testing and Refinement Need to Complete Documentation

Milestones for MSD II: Week 1  Order system components  Start testing of Nexus Hawk Router Week 2  Start integration of system components  Continue testing Week 4  Finish analytical testing evaluations  Continue testing Week 6  Finish final assembly of system  Continue testing Week 9  Finish documentation of testing results Week 10  Finish project documentation P08371 Portable Command Post

Questions? P08371 Portable Command Post