A new approach to design safe and reliable electrical stimulator
by Sead Moradi; Esmaeel Maghsoudloo; Reza Lotfi
International Journal of Biomedical Engineering and Technology (IJBET), Vol. 15, No. 4, 2014

Abstract: In this paper, a new active charge-balancing technique for functional electrical stimulation is presented. In this method, electrode voltage is monitored after each stimulation period and a charge-balancing circuit keeps the electrode voltage in the safe range. Also, a dynamic comparator is utilised to reduce the total power consumption. This method is adopted in a micro-stimulator which is used in a functional electrical stimulation application. Simulation in a high-voltage 0.18 μm CMOS technology validates the feasibility of the approach and its low power consumption. The power consumption of the charge-balancing circuits contributes 3.4% of the overall power consumption of the system.

Online publication date: Tue, 21-Oct-2014

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