Using Electromyography-Based Controls to Direct a LEGO Mindstorm Unit

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Using Electromyography-Based Controls to Direct a
LEGO Mindstorm Unit

• Preston Steele
• James Brooks
• Nicholas Gomes

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PIC
-timing interface -A/D converter -filtering -EMG
algorithm -RS232 serial port
Amplifier
EMG
Bluetooth adapter
NXT
-switch motors on/off -adjust motor speed
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Signal processing

• Regardless of samples

• Sample dependent

• 60 hz notch filter
• Bandpass ()

• Fourier
• Range of bandpass

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PIC18F4525

• 8 bit microcontroller
• Develop timer
• Analog to digital conversion
• Signal filtering
• Special EMG algorithm
• Bluetooth communication

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NXT

• 4 input, 3 output
• 32 bit microprocessor
• Phone app
• Sensors
• Light, touch, ultrasonic,
• Own software
• Icon based drag and drop

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LEGO Mindstorm
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References

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  Alfred Schouten, Peter Veltink, and Bart
  Koopmann. "Evaluation of EMG, Force and Joystick
  as Control Interfaces for Active Arm Supports."
  Journal of NeuroEngineering and Rehabilitation
  11.68 (2014). Print.
• E. Lum, C. Perez, Y . Sun. On detecting and
  Adaptive Timing for Electromyogram based control
  signals. Proceedings 38th Northeast
  Bioengineering Conference, Philadelphia, PA,
  pp.43-44, March 16-18, 2012.
• B. McCarthy, K. Stevens, C. King, E. Chabot, Y.
  Sun. Graded Muscle Contractions Determined by
  Temporal Recruitment. Proceedings, 39th
  Northeast Bioengineering Conference, Syracuse,
  NY, pp. 267-277, 2013.
• Microchip. PIC18F2525/2620/4525/4620 Data Sheet.
  San Jose, 2008. Print.
• BeagleBone. BeagleBone Black System Reference
  Manual. Dallas, 2013. Print.