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Vol. 92, Issue 5, May 2008, pp. 144-151




Active Bio-sensor System, Compatible with Arm Muscle Movement or Blinking Signals in BCI Application


Saeid Mehrkanoon, Mahmoud Moghavvemi

 Center for research in applied electronics (CRAE)

Dept. of Electrical and Electronic Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia

E-mails: mehrkanoon@perdana.um.edu.my and mahmoud@um.edu.my



Received: 12 April 2008   /Accepted: 20 May 2008   /Published: 26 May 2008


Abstract: This paper addresses a bionic active sensor system for the BCI application. Proposed system involves analog and digital parts. Two types of accurate sensors are used to pickup the blinking and muscle movement signals. A precision micro-power instrumentation amplifier with the adjustable gain, a sixth order low pass active filter with cutoff frequency 0.1 Hz, and a sixth order band pas filter with the bandwidth of 2-6 Hz are constructed to provide the clean blinking and arm muscle movement signals. TMS320C25 DSP processor is used for independent and unique command signals which are prepared for BCI application by a power amplifier and driver.


Keywords: EMG, active sensor, instrumentation amplifier, unique signal, BCI


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