標題: Detection of Instantaneous Frequency in EEG Using Phase Locked Loop(II)
作者: 林塾倫
Lin, Shu-Lun
羅佩禎
Luo, Pei-Zhen
電控工程研究所
關鍵字: 鎖相迴路;單邊旁頻帶;電機工程;控制工程;PLL;SSB;ELECTRICAL-ENGINEERING;CONTROL-ENGINEERING
公開日期: 1997
摘要: In this thesis, we investigate the feasibility of the phase- locked-loop (PLL) circuit in detection of the instantaneous frequency of EEG (electroencephalograph) signals. The PLL has been successfully applied to the high-frequency and signal- component (at a given time instant) sinusoidal signals for the time-varying frequency tracking. However, the EEG is a low- frequency and multi-component signals. To adapt the PLL for tracking the time-varying frequency of EEG, we move the EEG frequency spectrum to a much higher frequency region by applying the single-sideband-modulation (SSB) to EEG. The performance of PLL in the low-frequency and high-frequency cases are studied and compared by the computer simulation and hardware implementation. Results of frequency detection via the hardware implementation of PLL are shown to be in agreement with which of computer simulation. The study shows that a modification of the PLL enables the detection of the time-varying frequency of EEG.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT864591005
http://hdl.handle.net/11536/63651
Appears in Collections:Thesis