P08027: Wireless Assistive Control System

Identify Customer Needs

Table of Contents

Overview of Project Requirements

Requirements of Strap
Eliminate movement artifact
Simplify putting electrodes on person
Simplify hooking to the BioRadio

It is not necessary for the strap to keep the electrodes in place due to the type of electrodes used.

Signal Processing
Using BioRadio (for safety and performance)
Properly distinguish between the commands (Left/Right, Forward/Reverse)
Control Algorithm to use electromyography
Output control commands to an RF transmitter
RC Car / Robot
Receive commands through an RF receiver
Ensure noise reduction
Bio-signals must control the robot's movements
Sound capability
Light capability
IRB Study
Will use recorded data to confirm proper output after signal processing
Will ensure strap fits the 95th percentile
Live testing (team members of P08027)
Final product demo - grab someone who hasn't used it during presentation and have them use it.

Step 1. Dr. Amuso and the Electrical/Biomedical Engineering Department

QFD as of 11/7/07

Interaction(s) with our customer

Interview with Dr. Amuso, head of the Electrical Engineering Department
Interviewers: Benjamin J. Danziger, Peter Drexel, James Corcoran
Sponsor: Dr. Vincent Amuso
Date 14 September 2007, Dr. Amuso's office

Outcome of the Meeting

The purpose of this meeting was to determine all the requirements for this project. This information is to add to the already gathered information from Dr. Brown and Dr. Phillips, as project advisors and professors in the EE/BME department.

The final list of requirements is below as to avoid repitition

Step 2. Customer Needs

The final product is to be a package that can be demonstrated at open houses. It begins with placing EMG sensors on a person who is untrained with the device. They will be informed as to what actions will result in the desired movement of the robot. The person will be able to make the movements and see the robot move in real time. The signal will go from the EMG sensors to an amplifier on the market, to a computer where analysis of the signal will be performed, to a digital signal processor (DSP) that will determine the commands that will transmit the commands by radio frequency to the robot.

Below is a list of the requirements of Phase 1 of this project.

  1. Proper pad placement with a device to keep the wires in place
  2. Take the signals from the amplifier and process them in real time
  3. Send information to DSP
  4. Put in an audio system to indicate intensity levels on the person
  5. Output digital computer command to RF transmitter
  6. Receive command by RF Receiver and send to microcontroller on robot
  7. Robot

Detailed documentation of each step of the process

Step 3. Organize the Needs into a Hierarchy

Feedback from the robot is not necessary for Phase 1

Step 4. Overall Concepts

Documentation Summary
The Product Needs to
Need 1.1 Non-technical pamphlet on how to use the system
Need 1.2 Technical document as to how the glove/band is put together
Need 1.3 Technical description of all materials used
Need 2.1 How the signal is transmitted to the computer
Need 2.2 How the software receives real time data and what it entails
Need 2.3 How to send data to DSP in real time
Need 3.1 Communication with EMG software, receiving in real time
Need 3.2 Controller / Signal Processing
Need 4.1 Communication between RF RX and microcontroller
Need 4.2 Microcontroller code for robot
Need 4.3 Robot design and parts list

Winter Quarter interaction With Customer

Interview with Dr. Amuso, head of the Electrical Engineering Department
Interviewers: Benjamin J. Danziger
Date 20 December 2007, Dr. Amuso's office

Outcome of the Meeting

Over Winter quarter, the project underwent several changes. Dr. Amuso wants the audio system to be moved from the person to the car. No longer will there be an audio system or light scheme on the person.
Dr. Amuso has provided a Bio-Radio for the team to use. It is up to the team to use this instead of the current configuration which ties the demonstrations down to a computer lab.
This is a conceptual project. As long as human EMG signals control a robot by the end, Dr. Amuso will be satisfied. That being said, it is not necessary for us to send the data to a DSP. Instead, it is up to the team. *The team has decided to forgo the DSP.

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