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Motor imaginary-based brain–machine interface design using programmable logic controllers for the disabled

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  • Vickneswaran Jeyabalan
  • Andrews Samraj
  • Chu Kiong Loo

Abstract

Aiming at the implementation of brain–machine interfaces (BMI) for the aid of disabled people, this paper presents a system design for real-time communication between the BMI and programmable logic controllers (PLCs) to control an electrical actuator that could be used in devices to help the disabled. Motor imaginary signals extracted from the brain's motor cortex using an electroencephalogram (EEG) were used as a control signal. The EEG signals were pre-processed by means of adaptive recursive band-pass filtrations (ARBF) and classified using simplified fuzzy adaptive resonance theory mapping (ARTMAP) in which the classified signals are then translated into control signals used for machine control via the PLC. A real-time test system was designed using MATLAB for signal processing, KEP-Ware V4 OLE for process control (OPC), a wireless local area network router, an Omron Sysmac CPM1 PLC and a 5 V/0.3 A motor. This paper explains the signal processing techniques, the PLC's hardware configuration, OPC configuration and real-time data exchange between MATLAB and PLC using the MATLAB OPC toolbox. The test results indicate that the function of exchanging real-time data can be attained between the BMI and PLC through OPC server and proves that it is an effective and feasible method to be applied to devices such as wheelchairs or electronic equipment.

Suggested Citation

  • Vickneswaran Jeyabalan & Andrews Samraj & Chu Kiong Loo, 2010. "Motor imaginary-based brain–machine interface design using programmable logic controllers for the disabled," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 13(5), pages 617-623.
    • Handle: RePEc:taf:gcmbxx:v:13:y:2010:i:5:p:617-623
    DOI: 10.1080/10255840903405678
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