Social Robotics Platform

Colorado State University 2014-2015 Senior DesignElectrical Engineering 401

Team

Team Members: Adam Kattnig – [CMPE] Circuitry/Software, Motors

Meng Koh – [EE] Circuitry/Software, Motors

Melissa Wirtz – [EE] Circuitry/Software, I/O

Josh Krokowski – [ME] Platform Design, Case & Motion

Tessa Alford – [ME] Platform Design, Case & Motion

Project collaborators: Anschutz Medical Center CU Denver Respite Care

Advisor: Dr. Tony Maciejewski

The Issue

Developmentally delayed children lack motor skills and understanding of control

Therapy normally takes many resources

Previous design has shortcomings (named Glus)

Objectives and Goals

Engages child

Provides feedback to teach control

Does not require the presence of a therapist

Toy is interchangeable and contains no electronics

Designed for Customer

Therapist Wizard mode Mode selection

Patient Fun toys – easy to interchange Dynamic and engaging movements

Constraints

Weigh < 20 pounds

Platform size: 16” by 16” to 24” by 24”

3” in height

Use four 1/8” jacks as input points

Have soft edges (case)

Platform is plugged into an outlet

Easy toy detachment

Perform multiple actions (8-12)

Budget

$500 from Anschutz Medical

$750 from ECE Department

Total = $1250

Projected Costs: Motors Electrical motors & drivers Mechanical components

The project’s costs should stay within budget.

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Design Concept

Goal: Move a toy that sits on a

platform Isolate toy from electronics

Solution: Based on 3D Printer design Magnetically attached

Motor Driver Circuit

Goal: Drive three motors Reduce cost

Solution Custom motor driver

circuitry

Input/Output

Goal: React to patient’s actions of different developmental

stages

Solution Use of modular input interface: 1/8” jack Provide multiple interactive modes Provide buttons

Risks

Device Usage Mechanical stability Physical danger to patient Lack of engagement

Design Process Time constraints

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Mitigation Plans

Device Plans: Rapid prototyping techniques Cover for moving parts Prototype and “test” with children for feedback

on level of engagement

Design Process Plans Time saving techniques Standard components when possible

Failure Modes & Effects Analysis

Feasibility Analysis

3D printed parts are most prone to mechanical failure

Finite Element Analyses performed to ensure reliable performance

Current Progress

Motor driver system developed

Movement subsystem nearly finished

Reward (sound and lights) subsystem interfaced

Future Plans

January: Finalize first design

February: Test at Respite Care

March: Iterative testing and design

April: Final packaging and presentation

May: Documentation finalization

Conclusion

No replacement for professional therapist Platform is powerful tool (supplement)

Allows children to practice Gives parents at-home exercise

Engage Children

Provides Children with Additional Therapy

Questions?

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Project Website: http://projects-web.engr.colostate.edu/ece-sr-design/AY14/platform/