Návrh EMG zesilovače
Design of EMG amplifier
Type of document
bakalářská prácebachelor thesis
Author
Emmanuel Oghenekaro Irorobeje
Supervisor
Bís Ladislav
Opponent
Havlík Jan
Field of study
Biomedicínský technikStudy program
Biomedicínská a klinická technika (studium v angličtině)Institutions assigning rank
katedra biomedicínské technikyDefended
2023-06-20Rights
A university thesis is a work protected by the Copyright Act. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one?s own expense. The use of thesis should be in compliance with the Copyright Act http://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf and the citation ethics http://knihovny.cvut.cz/vychova/vskp.htmlVysokoškolská závěrečná práce je dílo chráněné autorským zákonem. Je možné pořizovat z něj na své náklady a pro svoji osobní potřebu výpisy, opisy a rozmnoženiny. Jeho využití musí být v souladu s autorským zákonem http://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf a citační etikou http://knihovny.cvut.cz/vychova/vskp.html
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Design and implementation of EMG amplifier for myopotential surface measurements Electromyographic (EMG) signals are frequently used as a rehabilitation control signal and diagnostic tool in the medical field. It has so far been challenging to develop a better amplification and filtering circuit design that can perfectly capture the characteristics of surface EMG signals for the intended applications. This thesis focuses on designing and implementing an EMG amplifier for myopotential surface measurements. The hardware and software components were integrated into a custom printed circuit board (PCB). It is a shield that collects the EMG signal from the human skeletal muscles, amplifies it, filters it, and outputs it to the Arduino's analog pin. The input signals are amplified with a precision instrumentation amplifier INA122, with a CMRR of 100dB. The signal pre-processing uses the right leg drive and special low pass filters to reduce the acquisition system's common mode (CM) voltage and other noise sources. The analog EMG signal from the PCB output was digitized using a 10-bit ADC of the Arduino Uno. The digitized signal was transmitted by serial cable using the Arduino codes to a PC. The result was a completely functional EMG device. These results were similar across tests and could be linked easily to muscle action and force. This EMG device may still have 50 Hz common mode noise, which could have been caused by its wide bandwidth and poor low-frequency qualities. Design and implementation of EMG amplifier for myopotential surface measurements Electromyographic (EMG) signals are frequently used as a rehabilitation control signal and diagnostic tool in the medical field. It has so far been challenging to develop a better amplification and filtering circuit design that can perfectly capture the characteristics of surface EMG signals for the intended applications. This thesis focuses on designing and implementing an EMG amplifier for myopotential surface measurements. The hardware and software components were integrated into a custom printed circuit board (PCB). It is a shield that collects the EMG signal from the human skeletal muscles, amplifies it, filters it, and outputs it to the Arduino's analog pin. The input signals are amplified with a precision instrumentation amplifier INA122, with a CMRR of 100dB. The signal pre-processing uses the right leg drive and special low pass filters to reduce the acquisition system's common mode (CM) voltage and other noise sources. The analog EMG signal from the PCB output was digitized using a 10-bit ADC of the Arduino Uno. The digitized signal was transmitted by serial cable using the Arduino codes to a PC. The result was a completely functional EMG device. These results were similar across tests and could be linked easily to muscle action and force. This EMG device may still have 50 Hz common mode noise, which could have been caused by its wide bandwidth and poor low-frequency qualities.
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- Bakalářské práce - 17110 [869]