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电生理信号的现场采集多采用磁带记录模拟方式,然后通过A/D转换送回微机分析处理。这样导致信号失真大,传输速度慢,再者由于存在大量机械部件使得系统可靠性下降。本系统采用大容量SRAM存储数据,使用串行通讯方式与微机进行数据交换,提高了传输速度及可靠性。由于采取了数字滤波,数据压缩编码等技术,大大改善了波形记录质量,延长了记录时间。其主要功能和特点介绍如下:
Electrophysiological signal acquisition more use tape recording simulation, and then sent back to the computer through A / D conversion analysis. This leads to signal distortion, slow transmission, and because of the presence of a large number of mechanical components make the system reliability decreased. The system uses large-capacity SRAM to store data, using serial communication with the computer for data exchange, improve the transmission speed and reliability. As a result of digital filtering, data compression coding technology, greatly improved waveform recording quality, extended recording time. Its main function and characteristic introduce as follows: