Wearable, Multimodal, Biosignal Acquisition System for Potential Critical and Emergency Applications

<div>Front-end active circuit of the proposed system. Schematics of (a) the instrument amplifier and (b) the second-order high-pass filter. (c) Circuit of the logic level converter. Arduino systems generally work at 5 V, but the MSP430 used in our EEG system is a microcontroller operating at 3.3 V–3.7 V If a TX/RX is directly connected, it may easily cause the MSP430 system to wear out or even overheat. (d) Therefore, between the two systems, the logic level converter presented here is used for voltage conversion.</div>

Emergency Medicine International

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Figure 2

Figure 2: Wearable, Multimodal, Biosignal Acquisition System for Potential Critical and Emergency Applications 