基于STM32F103单片机的电刺激器系统研制

Development of electric stimulator system based on STM32F103 SCM

目的:研制一种电刺激器系统,以满足医学院校本科生制备小鼠激怒反应模型的实验教学要求,同时降低教学成本。方法:电刺激器系统由软件和硬件两部分组成,其核心器件采用STM32F103型单片机。采用C语言编写STM32F103单片机控制硬件电路的程序,通过STM32F103主控电路和单片机与微机系统之间的RS232通讯电路,建立基于STM32F103固件库的MDK4.7工程模板。结果:电刺激器系统能够保证所产生刺激信号的精准度提高8%,通过设定刺激参数来制备小鼠激怒反应模型,成功达成小鼠激怒模型制备的预期效果。结论:研制的电刺激器系统与通常使用的自成一体的刺激仪相比,实现了计算机对电刺激器参数控制的智能化,符合实验教学要求。

Objective: To develop an electrical stimulator system to meet the requirements of experimental teaching of preparing mouse "irritating response model" for undergraduates of medical college, and to reduce the teaching cost at the same time. Methods: This electrical stimulator system was composed of software and hardware. Its core device was STM32 F103 type of single-chip micyoco(SCM). The program of STM32 F103 SCM control hardware circuit was compiled by C language. Through STM32 F103 main control circuit, and RS232 communication circuit between SCM and microcomputer system to establish MDK4.7 engineering template based on STM32 F103 firmware bank. Results: The electrical stimulator system can ensure the accuracy of the stimulation signal increased by 8%, and the expected effect of the preparation of the mouse "irritating response model" was successfully achieved by setting the stimulation parameters for preparing "irritating response model" of mouse. Conclusion: Compared with the common selfcontained stimulator, the developed electrical stimulator system can realize the intelligent control for the parameters of electrical stimulator by computer, and meet the requirements of experimental teaching.