摘  要：腦—機接口（Brain—computer interface，BCI）是一種可以讀取人腦中的生理電信號并分析其含義，然后將其轉換為控制信號直接對外部設備進行操控的系統。它的出現為人腦與計算機或其它電子設備之間的交流提供一種新的方式，在醫療康復領域和娛樂領域具有廣闊的應用前景。 

　　　本文設計了一款用于樂高拼裝小車的腦電控制系統。本系統包括腦電信號采集發送器，腦電信號數據接收處理平臺，樂高小車控制平臺和樂高拼裝小車四大模塊。首先，基于MindSet腦電耳機的藍牙數據發射器，設計腦電信號接收處理平臺。該平臺由Delphi制作，可以從數據流中提取出大腦集中度和冥想度兩個指標；然后，設計樂高拼裝小車的控制平臺。該平臺由LabView編寫，具有良好的人機界面及樂高小車控制模塊，可以根據大腦的集中度和冥想度的數值高低來控制樂高小車的速度和機械爪的開合。

　　　系統測試結果表明，該系統具有實時性強、可靠性高的優點，為腦—機接口產品的開發奠定了一定的技術基礎?！　?/p>

關鍵字：MindSet腦電耳機；藍牙SPP(Serial Port Profile)協議；樂高拼裝小車；腦電控制

Abstract: Brain-computer interface (BCI) is a novel human-computer interface for direct communication between brain and computers or other electric devices .BCI can provide a new communication option that does not depend on peripheral nerves and muscles for those with neuromuscular impairments, and might also give those without disabilities a supplementary control channel or a control channel useful in special circumstances. So, it has great social value and application prospect. 

This paper designes a EEG control system for the build-up Lego car. This system includes the brain signal acquisition transmitter, the EEG data receiving and processing platform, Lego car control platform and the assembled Lego car. Firstly, I designed the EEG signal receiving and processing platform in this system based on the Bluetooth data transmitter of the MindSet EEG headset. This platform is made ??by Delphi, which can extract the brain concentration and the meditation from the data stream. Secondly, I designed the Lego assembled car control platform. This platform that was programed by LabView has a good human- interface and the control module for the Lego assembled car. According to the level of brain concentration and meditation, this platform can control the speed of LEGO car and the opening and closing of the mechanical grippers.

The experimental results show that this designed system has the featuers of real-time, high reliability. In a word, the EEG control which can be developed in the various domains and has a good application prospects is a novel technology.

Keywords: MindSet headset; Bluetooth SPP protocol; Lego assembled car; EEG control