The data communicating between the data sampling unit and the computer adopts RS485 fieldbus. At the same time, the communication protocols and RS485 communication interface are designed.
前端数据采集装置和后台上位机之间数据通信采用RS485总线，设计了RS485通信接口电路和通信协议。
The hardware sampling unit of the monitor system is constituted by the data gathering module, including digital input module and analog input module, which are connected by the RS-485 main line form.
系统的硬件采样部分由数据采集模块(包括模拟量输入模块和数字量输入模块)构成，各模块间以RS - 485总线形式进行连接。
The BCI consists mainly of three parts: a virtual keyboard consisting of 36 buttons, a EEG-sampling unit and a data processing and target letter recognizing unit.
该BCI主要由三部分构成：带有36个键的虚拟键盘，EEG数据采集单元，数据处理和目标字符识别单元。
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