1. Group N3: Digital Control
Mary Nsunwara
Wayne Blake
Reshun Gethers

2. Current Design Issues EMG Circuit Signal Source & Usage
Will previous design work
Signal Source & Usage
Which muscles to monitor
A/D Converter & Software
Need PCI connection

3. Current EMG Circuit

4. Specifications Gain: 20,000 Bandwidth: 1.7 - 34 Hz
Input Impedance: 10 M
CMRR: 100dB

5. Other EMG Considerations
MindTel TNG-3B

6. MindTel TNG-3B Is an actual electromyogram Has serial port connection
Data rate: 19.2 kbps
Cost: $150

7. TNG-3B Software Managed by NeatTools Software
Utilizes flow chart diagrams
No hard coding required

8. Current A/D Converter Keithley DAS-1701ST-DA
Max sampling rate: 160 kb/s
Input ranges: V, 1V, 100mV, 20mV
Gains: 1, 5, 50, 250
Uses DriverLINX Package Software
Does not have a PCI connection

9. Signal Source Options Eyebrows Jaw muscles Good contraction speed
Difficult to move one eyebrow
Low fat tissue coverage
Jaw muscles
Better contraction speed
Easier to bite on one side of mouth
Usually covered by more fat tissue

10. Current Design Goals Front End Back End
Build and test current EMG circuit
Acquire a transferable A/D converter
Back End
Determine best way to signal the RC device