Using Electromyography-Using Electromyography-Based Controls to Direct a Based Controls to Direct a

LEGO Mindstorm UnitLEGO Mindstorm UnitPreston SteeleJames Brooks

Nicholas Gomes

EMGAmplifie

r

-timing interface-A/D converter

-filtering-EMG algorithm

-RS232 serial port

Bluetooth

adapter

-switch motors on/off

-adjust motor speed

PIC

NXT

Signal processingSignal processingRegardless of samples Sample dependent

• 60 hz notch filter

• Bandpass ()

• Fourier

• Range of bandpass

PIC18F4525PIC18F4525• 8 bit microcontroller• Develop timer • Analog to digital

conversion• Signal filtering• Special EMG algorithm• Bluetooth

communication

NXTNXT• 4 input, 3 output• 32 bit microprocessor• Phone app• Sensors

o Light, touch, ultrasonic,

• Own softwareo Icon based drag and drop

LEGO MindstormLEGO Mindstorm

ReferencesReferences• Inman, Verne, J.B. Sanders, and Leroy Abbott. "Observations of the

Function of the Shoulder Joint." Clinical Orthopaedics & Related Research 330 (1996): 3-12. Print.

• Lobo-Pratt, Joan, Arvid Keemink, Arno Steinen, 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.