Power consumption of wireless EEG device for BCI application: Portable EEG system for BCI

Size, weight, and long-lasting battery lifetime are important factors to be considered in designing wireless, portable EEG device for brain-computer applications. Associated with those factors, particularly, the power consumption should be carefully managed and measured during the designing process of EEG device and uses in real operational environment. The designed experimental EEG device is composed of pre-amplifier part, micro-process part, data storage part and data transmission part. Different types of microprocessors, storage chips, and wireless communication chips can be changeable to each designed parts to measure the power consumption in terms of different designing conditions associated with different computational power, data sampling size, and wireless network environment. Throughout the diverse measurements using diverse part components, basic designing and operational conditions associated with power consumption are offered for movable, portable EEG applications.

I. Introduction

Brain Computer Interface (BCI) analyzes brain activity by measuring the chemical changes from human's brain. The measurement method of brain activity is used in Functional Near Infrared (FNIR), Functional Magnetic Resonance (FMIR), Electroencephalogram (EEG).