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  • Author Author: martinvalencia
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TI Hercules LaunchPad Tipo 2: Electromyography Signal DSP part 1

martinvalencia

Electromyography (EMG) is an electrodiagnostic medicine technique for evaluating and recording the electrical activity produced byskeletal muscles.[1] EMG is performed using an instrument called an electromyograph, to produce a record called anelectromyogram. An electromyograph detects the electrical potential generated by muscle cells[2] when these cells are electrically or neurologically activated. The signals can be analyzed to detect medical abnormalities, activation level, or recruitment order or to analyze the biomechanics of human or animal movement.(source Wikipedia).

 

                                                                     

 

For this project it was decided to put the electrodes on the biceps brachii, and which is a large and easier to obtain a PUM muscle.

The figure shows how to putting on muscle electrodes.

 

image

the electronic circuit is composed of an instrumentation amplifier with a high gain MCP6022, the second stage consists of two filters:

Bandpass: 300Hz - 3KHz

Rechazabanda (in my country): 60Hz

attached image

Note: #Electronica #Medica, Beginning the study of muscle electrical signals at the moment is amplified and filtered for subsequent digital processing with#Hercules # RM46, using the discrete fourier transform #FFT for analizis myoelectric signal.image


 

Next Part

TI Hercules LaunchPad Tipo 2: Electromyography Signal DSP part 2

TI Hercules LaunchPad Tipo 2: Electromyography Signal DSP part 3


  • in reply to DAB

    once again thank you for your comments, I forget to comment but this circuit is not for use by medical electronics, but for final implementation take this into consideration the electricity insulation necessary.

     

    I'm from Peru, is willingly receive ideas from experienced people like you, although not the field I'm sure you know very well the electronics.

  • in reply to martinvalencia

    Hi Martin,

     

    You will find that most devices that come in contact with humans require a large separation from mains power.

     

    You also can get the mains frequency interfering with low level signals, so in general, rechargeable batteries are preferred for most devices.

     

    I think here in the USA, you have to have the devices certified for medical use, but that is not my field of expertise.

     

     

     

    DAB

  • in reply to DAB

    Thank you very much for giving me your opinion! image

     

    My circuit has a powering 3.3v in general by batteries,I'm still not sure if I should use some kind of electrical insulation for AC signal, because the circuit consume low current and low voltage operated, if possible I would like your opinion I am still a student of electronic engineering.

     

     

    ,

  • Hopefully you are powering your circuit from a battery.

     

    There are some potentially deadly consequences for powering the circuit from mains power.

     

    You might want to check your local codes for medical device isolation.

     

    DAB