Electrical and Computer Engineering

Motion Analyzer for Physical Therapy

(MAPT)

SDP10 - Preliminary Design Review

Arjuna Baratham (CSE) - Sean Klaiber (EE) - James Rutter (EE) - Constantina Tyes (EE)

Professor Soules

Advisor, Senior Lecturer, ECE

October 23rd, 2009

2Electrical and Computer Engineering

Outline

I. Problem Statement

II. Design

III. Timeline/MDR Deliverables

IV. Team Roles

3Electrical and Computer Engineering

Problem Statement

Reliable Quantitative Data in Physical Therapy (PT) can only be Collected with a One-on-One Patient/Therapist Interaction

- Leads to multiple visits that are time consuming and costly

- PT may be skeptical of the reliability of data if not present

4Electrical and Computer Engineering

Solution

Create a simple, inexpensive, and portable device that can accurately measure physical therapy related motion

- Provide exercise feedback to user with simple interface

- Log exercise data for PT to analyze patient's progress

- Record reliable data to ensure PT's trust in device

- Reduce number of visits to the clinic

5Electrical and Computer Engineering

Outline

I. Problem Statement

II. Design

III. Timeline/MDR Deliverables

IV. Team Roles

6Electrical and Computer Engineering

Vision of Solution

Motion Sensors Portable DeviceMemory

CardPT Computer PT

Patient’s Home Therapy Clinic

7Electrical and Computer Engineering

Block Diagram

Motion Sensor(s)

Wireless Transmitter

WirelessReceiver

CPUVisual/Audio

Indicators

Portable Memory

GUI for PTDSP Analysis

Software

Portable Storage and Feedback Device

PT Computer

Wireless Sensor

8Electrical and Computer Engineering

Wireless Sensor

Motion Sensor(s)

Wireless Transmitter

WirelessReceiver

CPUVisual/Audio

Indicators

Portable Memory

GUI for PTDSP Analysis

Software

Portable Storage and Feedback Device

PT Computer

Wireless Sensor

9Electrical and Computer Engineering

The Wireless Sensor

• Measures Range of Motion

• Attached to the patient’s leg

• Lightweight

• Non-restrictive

ΦΦΦ Φ

10Electrical and Computer Engineering

The Wireless Sensor

Zigbee Transmitter

• 10-30 meter range

• Low power output

• Affordable

Accelerometers

• Measures acceleration in 3D

• Data used to calculate pitch, velocity, and position

11Electrical and Computer Engineering

Portable Storage and Feedback Device (PSFD)

Motion Sensor(s)

Wireless Transmitter

WirelessReceiver

CPUVisual/Audio

Indicators

Portable Memory

GUI for PTDSP Analysis

Software

Portable Storage and Feedback Device

PT Computer

Wireless Sensor

12Electrical and Computer Engineering

PSFD Functionality

• Receives physical therapy exercise data

• Compares motion data to pre-defined baseline

• Provides feedback to the user

• Electronic display of results and device status

• Stores data in a removable memory card

13Electrical and Computer Engineering

PT Computer

Motion Sensor(s)

Wireless Transmitter

WirelessReceiver

CPUVisual/Audio

Indicators

Portable Memory

GUI for PTDSP Analysis

Software

Portable Storage and Feedback Device

PT Computer

Wireless Sensor

14Electrical and Computer Engineering

PT Software

15Electrical and Computer Engineering

Design Alternatives

• More than just Kinematics Sensing

• Internet-based Data Exchange

• Computer-Based User Interface

• Proprietary PT Software (MATLAB)

16Electrical and Computer Engineering

Outline

I. Problem Statement

II. Design

III. Timeline/MDR Deliverables

IV. Team Roles

17Electrical and Computer Engineering

Timeline

18Electrical and Computer Engineering

MDR Deliverables

• Working Wireless Sensor

• Meaningful Motion Capture

• Processed by Portable Device

• Electronic Display of Results

19Electrical and Computer Engineering

Team Roles

• Wireless Sensor: Constantina & Arjuna

• PSFD Data Processing: Arjuna & James

• PSFD Interface: James

• Portable Memory: Sean & Constantina

• PT Software: Sean

20Electrical and Computer Engineering

Questions

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