Group N3: Digital Control

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Presentation transcript:

Group N3: Digital Control Mary Nsunwara Wayne Blake Reshun Gethers

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

Current EMG Circuit

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

Other EMG Considerations MindTel TNG-3B

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

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

Current A/D Converter Keithley DAS-1701ST-DA Max sampling rate: 160 kb/s Input ranges: 0 - 5V, 1V, 100mV, 20mV Gains: 1, 5, 50, 250 Uses DriverLINX Package Software Does not have a PCI connection

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

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

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