P16005: Motorized Standing Wheelchair 2
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Systems Design

Table of Contents

Team Vision for System-Level Design Phase

Phase Summary:

Functional Decomposition

To view the latest updated version of the Functional Decomposition, click on the following link Functional Decomposition

To view the previous version, click on the following link Functional Decomposition

Functional Decomposition

Functional Decomposition

Benchmarking

To view the latest updated version of the Systems Benchmarking, click on the following link Systems Benchmarking

Lift Mechanism

Lift Mechanism

Safety Restraints

Safety Restraints

Engage Tray

Engage Tray

Detect Limit

Detect Limit

Use With Hoyer Lift

Use With Hoyer Lift

Second Controller Activated by Non-User

Second Controller Activated by Non-User

Input Lift Angle

Input Lift Angle

User Activates Lift Device

User Activates Lift Device

Morphological Chart

To view the latest updated version of the Morphological Chart, click on the following link Morphological Chart

To view the previous version, click on the following link Morphological Chart

Morphological Chart

Morphological Chart

Concept Selection

The original concepts that were used in the first version of the Pugh Chart Analysis are seen below:

Concepts Version 1

Concepts Version 1

After performing a Pugh Chart Analysis and Benchmarking each option, the concepts were narrowed down to the following:

Concepts Version 2

Concepts Version 2

Selection Criteria (in order of most important to least important):

  1. Safety
  2. Comfort/Ergonomics
  3. Durability
  4. Cost
  5. Ease of use
  6. Efficiency
  7. Availability of Resources
  8. Adjustability
  9. Maintenance
  10. Speed
  11. Time to complete

To view version 1 of the Pugh Chart (sheet 1) and the latest updated Pugh Chart (sheet 2), click on the following link Pugh Chart

Pugh Chart Version 2

Pugh Chart Version 2

Pugh Chart Concept 1 Sketches

The main parts of Concept 1 are: The hoyer swing incorporated into the chair, and the desk tray concept. The images of these concepts are shown below.
Hoyler Lift Incorporated Concept

Hoyler Lift Incorporated Concept

Desk Tray Rotation Feature

Desk Tray Rotation Feature

Pugh Chart Concept 3 Sketches

The main parts of Concept 3 are: Gear and Chain mechanism for seat and back support movement, Touch Screen for PT Input Angle and Voice Controlled Lift Mechanism, Angle sensors to limit movement, Wireless second controller Modified Hoyer Sling for standing restrains.
Concept 3 Drawing

Concept 3 Drawing

Systems Architecture Flowcharts

To view the latest updated version of the Systems Architecture Flowcharts, click on the following link: Systems Architecture. To navigate this file, click on the desired subsystem from the first page and you will be directed to the detailed version.

The subsystem overview is seen below:

Subsystem Overview

Subsystem Overview

Within the subsystem overview detailed versions of the individual systems can be found

Feasibility: Prototyping, Analysis, Simulation

Budget Feasibility

Budget

Budget

Hoyer Lift Swing Incorporation Feasibilty

Hoyler Lift Swing

Hoyler Lift Swing

Safety Restrains Feasibilty

Safety Restrain feasibility

Safety Restrain feasibility

Power Feasibility

Power Distribution

Power Distribution

Angle Limit Feasibility

Angle Limit Feasibility

Angle Limit Feasibility

Risk Assessment

To view the latest updated version of the Risk Assessment chart, click on the following link Risk Assessment
Risk Assessment

Risk Assessment

Design Review Materials

To view the Systems Design Review Presentation, click on the following link Systems Design Review Presentation

Plans for next phase

Questions for Next Phase

  1. What are the critical subsystems?
  2. How are we going to test the critical subsystems?
  3. Have we demonstrated a proof-of-concept?
  4. Has each subsystem been adequately reviewed?
  5. Do the subsystems come together to form a complete system?
  6. What analysis can we perform to support each subsystem?
  7. Are the engineering and customer requirements meant?
  8. Are there additional feasibility tests we can perform or existing tests we should examine more?

Team Schedule

Team Schedule

Team Schedule


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