TY - GEN
T1 - Adaptive multi-channel portable stimulator based on PWM
T2 - 2011 8th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2011
AU - Alfaro, M.
AU - Chairez, I.
AU - Niño De Rivera, L.
PY - 2011
Y1 - 2011
N2 - Electrical Stimulators are widely used in various medical specialties. Depending on the tissue that is going to be stimulated, physicians may adjust the characteristics of the stimulus signals such as frequency, amplitude, length and waveform. Commercial stimulators usually are just capable to generate preloaded waveforms and they cannot be adjusted freely. Moreover, the number of available channels is usually very low. However, not all medical treatments require the same stimulus. Actually, many medical conditions where the electrical stimulation is needed demand specific waveforms with different characteristics. Stimulus can vary in frequency, amplitude, time of application and form. This study describes a portable multichannel and adaptive electrical stimulator. The portable 16-channels stimulator presented in this paper consist of five sections; 1) an interface where the user is able to design the stimulation signal, 2) the transmission modules, one connected to a Personal Computer and the other one to the stimulation device, 3) microcontroller (MCU) that is going to organize the information received from the PC in order to generate the Pulse Width Modulation (PWM) signals (These PWM signals are injected into a set of low pass filters to transform these digital signals into analog waveforms) and 4) an attenuator to regulate the amplitude signal and restricts the current to avoid tissue damage. The presented system permits to design the stimulation signals according to the physician desires. The system was tested with real tissue under different stimulation patterns showing low current consumption and high input to output voltages relationship.
AB - Electrical Stimulators are widely used in various medical specialties. Depending on the tissue that is going to be stimulated, physicians may adjust the characteristics of the stimulus signals such as frequency, amplitude, length and waveform. Commercial stimulators usually are just capable to generate preloaded waveforms and they cannot be adjusted freely. Moreover, the number of available channels is usually very low. However, not all medical treatments require the same stimulus. Actually, many medical conditions where the electrical stimulation is needed demand specific waveforms with different characteristics. Stimulus can vary in frequency, amplitude, time of application and form. This study describes a portable multichannel and adaptive electrical stimulator. The portable 16-channels stimulator presented in this paper consist of five sections; 1) an interface where the user is able to design the stimulation signal, 2) the transmission modules, one connected to a Personal Computer and the other one to the stimulation device, 3) microcontroller (MCU) that is going to organize the information received from the PC in order to generate the Pulse Width Modulation (PWM) signals (These PWM signals are injected into a set of low pass filters to transform these digital signals into analog waveforms) and 4) an attenuator to regulate the amplitude signal and restricts the current to avoid tissue damage. The presented system permits to design the stimulation signals according to the physician desires. The system was tested with real tissue under different stimulation patterns showing low current consumption and high input to output voltages relationship.
KW - Multichannel electrostimulator
KW - Portable stimulator
KW - Pulse-Width-Modulation
UR - http://www.scopus.com/inward/record.url?scp=84855774267&partnerID=8YFLogxK
U2 - 10.1109/ICEEE.2011.6106616
DO - 10.1109/ICEEE.2011.6106616
M3 - Contribución a la conferencia
AN - SCOPUS:84855774267
SN - 9781457710117
T3 - CCE 2011 - 2011 8th International Conference on Electrical Engineering, Computing Science and Automatic Control, Program and Abstract Book
BT - CCE 2011 - 2011 8th International Conference on Electrical Engineering, Computing Science and Automatic Control, Program and Abstract Book
Y2 - 26 October 2011 through 28 October 2011
ER -