Zheng Yi, Wu Xiao-Mei, Fang Zu-Xiang
Dept. of Electronic Engineering, Fudan University, Shanghai 200433.
Zhongguo Yi Liao Qi Xie Za Zhi. 2008 Jan;32(1):32-4, 39.
According to the instruction of the operator, the designed programmable multichannel stimulator will deliver stimuli with an assigned amplitude and a proper width to the electrode-array in various modes. Each stimulation time is controlled by the internal timer of the MCU, while the stimulated electrodes' spatial parameter is controlled by the CPLD. Having abandoned conventional isolation using the transformer, we have adapted optical coupling and stable float ground connection to achieve the safety standard required by physiological measurements.
根据操作员的指令，设计的可编程多通道刺激器将以指定的幅度和适当的宽度，通过各种模式向电极阵列发送刺激。每次刺激时间由微控制器（MCU）的内部定时器控制，而被刺激电极的空间参数则由复杂可编程逻辑器件（CPLD）控制。摒弃了传统的变压器隔离方式后，我们采用了光耦合和稳定的浮空接地连接，以达到生理测量所需的安全标准。
