一种基于MCU及CPLD平台的程控多道电生理刺激仪  

Programmable Multichannel Electrophysiological Stimulator Based on MCU and CPLD Platform

作　　者：郑懿[1] 邬小玫[1] 方祖祥[1] 

机构地区：[1]复旦大学电子工程系,上海200433

出　　处：《中国医疗器械杂志》2008年第1期32-34,39,共4页Chinese Journal of Medical Instrumentation

基　　金：国家自然科学基金(30400102);上海市重点学科建设项目资助;项目编号:B112

摘　　要：研制的多道程控刺激仪能够根据操作者要求,以多种模式向电极阵列送出指定幅度和脉宽的脉冲。刺激仪由单片机定时器控制时间参数,由CPLD控制空间参数,由电源控制幅度参数。摒弃了传统变压器隔离的方法,采用光电耦合以及浮地等设计,以达到生理研究需要的安全标准。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.

关 键 词：程控刺激仪 时间控制 空间控制 

分 类 号：R318.6[医药卫生—生物医学工程]