1. Chair-Mounted Computer Workstation
Introduction
Project Requirements
Abstract Current computer console paradigms involve the use of significant computer hardware within an enclosure presented in front of the operator, which must be environmentally protected and maintained. Specifically in a military application, a less cumbersome method of interface is needed to allow soldiers to accomplish their typical work tasks. The solution to this problem is the development of a versatile and modular workstation mounted to a chair allowing greater freedom of movement while maintaining functionality and durability. The result of this project will be an operational prototype that may be modeled for future development. This prototype will demonstrate a feasible and reliable solution to the current problem, allowing the operator mobility without sacrificing functionality.
Design Objectives
Provide the functionality of a traditional computer workstation
System shall be able to function in a cramped environment with
large amounts of ambient noise.
Implement a graphical user interface to ease use of peripherals
Functional Requirements
Provide audio and visual Feedback
User will have redundant data entry
User will be able to use all system capabilities with peripherals
User will be able to use system with minimal training
Problem Statement
The user interface must allow similar functionality to that of a standard personal computer system, while simultaneously allowing the greatest freedom of movement possible. Further, a display must allow the operator unobstructed view of the output while also allowing a view of his/her peripheral environment.
Intended Users & Uses
The intended operator for the design is a member of the United States Military. The workstation is intended to be installed on a watercraft or aircraft for military purposes. The design is intended for use by both males and females and is not age specific.
Figure 5: Interior of a US military aircraft
Measurable Milestones
Problem definitions
Technology considerations and selection
End-product design
End-product prototype implementation
End-product testing
End-product demonstration
End-product documentation
Design Constraints
Must not interfere with user’s movements
Must be able to draw power from platform
Must fit between existing equipment
Must be completed by May 2006
Assumptions
Users will be familiar with the Windows XP
User has use of both eyes
User has full function of extremities
Installation of Windows Powertoys
Operating Environment
Military Support Aircraft and Warships
Confined spaces with large ambient noise
Sheltered from the elements
Secure area
Resources
Limitations
Project budget
Must not interfere with user’s duties
System must not interfere with existing equipment
Acknowledgements
Dr. Arun Somani
Dr. Zhao Zhang
Lockheed Martin
Hardware Items
Cost
EyeTop Display Glasses
$0.00
MicroGyro 2-Axis Gyro
$150.00
FireFox Throat Microphone
$38.00
Dimax I2C Master Controller
$80.00
USB Keypad
$34.00
Total
$302.00
Software Items
Cost
Windows XP Professional
$0.00
NASA World Wind
Dragon Naturally Speaking 8.0
Total
Proposed Approach and Considerations
Proposed Approach
Research workstation technologies
Select appropriate technologies
Design to constraints and purpose of client
Test final system prototype
Technologies Considered
Data display devices
Tactile input devices
Voice recognition
Testing Considerations
Testing usability by end user
Testing system functionality
Testing hardware/software compatibility
Total Cost of Project
Cost
Total Without Labor
$302.00
715 Hours at $12.00 per hour $
Total With Labor $
Figure 1: MG1101 MicroGyro
The MG1101 MicroGyro is utilized as the movement sensor for the glove mouse-pointer system. This device was selected due to its small size and its ability to sense movement on two separate axes of motion at once.
Figure 3: FireFox Throat Microphone
The FireFox throat microphone is utilized to allow for voice driven data entry in an environment with heavy ambient noise. The microphone can be used in conjunction with the earphones/radios already in use on military platforms.
Schedule
Figure 2: EyeTop Display Glasses
Figure 6: Project Schedule
The display system is implemented by a pair of EyeTop glasses. The glasses have a single monocular display on the right side. The display glasses allow users to observe the computer screen without interfering with their duties.
Figure 4: Dimax 12C Master Controller
Closing Summary
Control of the gyro and keypad is realized through the Dimax I2C master controller. This device allows the system to communicate with the gyro and keypad.
Current computer workstations involve significant computer hardware in an enclosure usually placed in front of the operator, with environmental protection and maintenance being required. A less intrusive and smaller workstation than this standard would enhance the ability of military personnel to complete required tasks. By providing a chair-mounted computer workstation, the size and mobility will become assets rather than hindrances. The system will be designed specifically for tasks associated with military personnel while maintaining functionality and durability the operator currently uses. This project will maintain the efficiency and functionality of current workstations while making significant advancements in reducing size and allowing the operator more flexibility.
Expected End Product and Other Deliverables
User Manual
Graphical User Interface for System
Prototype of Input Peripherals
Device drivers for peripherals
Group Members
Isi Oamen Electrical Engineering
David Roberts Computer Engineering
Shawn Yockey Computer Engineering
Client
Lockheed Martin
Faculty Advisors
Dr. Arun Somani
Dr. Zhao Zhang
Project May06-09
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