本文選題：腦電采集系統(tǒng) + 數(shù)據(jù)傳輸系統(tǒng)��； 參考：《電子科技大學(xué)》2017年碩士論文

【摘要】：腦電信號(hào)是大腦中的神經(jīng)元細(xì)胞電生理活動(dòng)的直接體現(xiàn),其在臨床和科研中都有得到廣泛應(yīng)用,腦電采集系統(tǒng)作為腦電信號(hào)的采集設(shè)備也得到了很高的關(guān)注。為了滿足腦電采集系統(tǒng)在科研中的要求,本文設(shè)計(jì)了一款64導(dǎo)聯(lián),高性能的腦電采集系統(tǒng)的數(shù)據(jù)傳輸子系統(tǒng)。該腦電采集系統(tǒng)由模擬部分和數(shù)據(jù)傳輸子系統(tǒng)組成,模擬部分并行完成所有導(dǎo)聯(lián)腦電信號(hào)的提取、放大、硬件濾波和采樣等工作,數(shù)據(jù)傳輸子系統(tǒng)將模擬部分采集到的腦電數(shù)據(jù)進(jìn)行通道校驗(yàn)、濾波和打包上傳等處理。由于該腦電采集系統(tǒng)的導(dǎo)聯(lián)數(shù)比較多,采樣率高,腦電數(shù)據(jù)位寬,所以在模擬采集部分與數(shù)據(jù)傳輸子系統(tǒng)之間添加了先進(jìn)先出(FIFO)的緩存來實(shí)現(xiàn)高速的數(shù)據(jù)處理和傳輸。數(shù)據(jù)傳輸子系統(tǒng)也是該腦電采集系統(tǒng)的主控系統(tǒng),由作為主控制器的TI公司的高性能數(shù)字信號(hào)處理器TMS320C6748和作為USB協(xié)處理器的Cypress公司的CY7C68013組成。主控制器分別從8塊模擬子板的FIFO芯片中讀取腦電數(shù)據(jù)進(jìn)行校驗(yàn),100Hz陷波之后通過DMA通道傳輸?shù)経SB協(xié)處理器中,由USB協(xié)處理器將腦電數(shù)據(jù)通過USB電纜傳輸?shù)絇C人機(jī)交互軟件中,同時(shí)該主控制器還完成對(duì)整個(gè)系統(tǒng)的控制。PC人機(jī)交互軟件將從USB接口采集上傳的腦電數(shù)據(jù),并對(duì)該數(shù)據(jù)進(jìn)行通道識(shí)別,波形顯示,存儲(chǔ)等。為了驗(yàn)證該數(shù)據(jù)傳輸子系統(tǒng)的性能,該論文設(shè)計(jì)了數(shù)據(jù)傳輸校驗(yàn)實(shí)驗(yàn),數(shù)字陷波實(shí)驗(yàn),實(shí)驗(yàn)證明該數(shù)據(jù)傳輸系統(tǒng)能夠正確,有序,高效的完成該腦電采集系統(tǒng)的數(shù)據(jù)傳輸任務(wù)。為了驗(yàn)證整個(gè)腦電采集系統(tǒng)可以進(jìn)行科研實(shí)驗(yàn),該論文設(shè)計(jì)了自發(fā)腦電實(shí)驗(yàn)和誘發(fā)腦電實(shí)驗(yàn),誘發(fā)腦電實(shí)驗(yàn)為有oddball實(shí)驗(yàn)范式實(shí)驗(yàn),穩(wěn)態(tài)視覺誘發(fā)電位(SSVEP)實(shí)驗(yàn),MOVEP視覺誘發(fā)運(yùn)動(dòng)起始電位實(shí)驗(yàn),通過實(shí)驗(yàn)驗(yàn)證了整個(gè)腦電采集系統(tǒng)能夠滿足科研的需求。
[Abstract]:EEG signal is the direct embodiment of the electrophysiological activities of neuron cells in the brain. It has been widely used in clinical and scientific research. The EEG acquisition system as the EEG acquisition equipment has also been highly concerned. In order to meet the requirements of EEG acquisition system in scientific research, this paper designed a 64-lead, high-performance EEG acquisition system data transmission subsystem. The EEG acquisition system consists of analog part and data transmission subsystem. The analog part accomplishes the extraction, amplification, hardware filtering and sampling of all the lead EEG signals in parallel. The data transmission subsystem processes the EEG data collected by the analog part for channel verification, filtering and packing and uploading. Because the EEG acquisition system has many leads, high sampling rate and wide EEG data bit, the first in first out FIFO buffer is added between the analog acquisition part and the data transmission subsystem to achieve high-speed data processing and transmission. The data transmission subsystem is also the main control system of the EEG acquisition system, which is composed of the high performance digital signal processor (TMS320C6748) of TI Company as the main controller and the CY7C68013 of Cypress Company as the coprocessor of USB. The main controller reads EEG data from 8 analog sub-board FIFO chips to verify 100Hz notch waves, then transmits them to USB coprocessor via DMA channel. The USB coprocessor transmits EEG data through USB cable to PC human-computer interactive software. At the same time, the main controller also completes the control of the whole system. PC human-computer interaction software will collect and upload EEG data from the USB interface, and carry out channel identification, waveform display, storage and so on. In order to verify the performance of the data transmission subsystem, the data transmission verification experiment and the digital notch experiment are designed in this paper. The experiment proves that the data transmission system can complete the data transmission task of the EEG acquisition system correctly, orderly and efficiently. In order to verify that the whole EEG acquisition system can carry out scientific research experiments, this paper designs the spontaneous EEG experiment and the evoked EEG experiment. The induced EEG experiment is a oddball experimental paradigm experiment. The steady state visual evoked potential (SSVEP) experiment and MOVEP visual evoked motor initiation potential (MOVEP) experiment have proved that the whole EEG acquisition system can meet the needs of scientific research.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：R741.044;TP274.2

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