文档介绍：河北工业大学
硕士学位论文
经颅磁刺激器主回路分析及控制电路软件设计
姓名:杨少青
申请学位级别:硕士
专业:生物医学工程
指导教师:李颖
20071101
河北工业大学硕士学位论文

经颅磁刺激器主回路分析及控制电路软件设计

摘要

经颅磁刺激(Transcranial ic Stimulation,TMS)技术是一种用于大脑皮层刺激的
非侵入的新方法,它具有安全、有效、无痛、无损伤、易于重复及操作简单等优点,已被
应用于精神疾病的治疗及脑功能研究中。本文对经颅磁刺激器进行设计,主要在主回路的
分析和控制电路的软件设计方面进行了工作。
本文分析了设计经颅磁刺激器的一般原则,包括基本理论、硬件及其构成,讨论了研
制过程中遇到的问题。建立了磁刺激器的 RLC 模型,给出模型参数的计算方法,分析和
讨论了决定感应强度的各种因素,详细计算了磁刺激系统各元件的参数。针对磁刺激器对
电压、电流的要求和设计中的注意事项,对元器件进行了选择。最终设计制作出一套经颅
磁刺激系统,该系统的最高工作电压可达千伏。在对该系统的控制电路进行设计分析
的基础上,编写了控制系统软件的程序,通过以单片机为核心的控制系统来达到控制主回
路的充放电的目的。通过实验验证了该系统具有工作稳定、操作方便的特点。

关键词:经颅磁刺激,主回路,控制电路,硬件设计,软件设计

i
河北工业大学硕士学位论文
RESEARCH OF THE MAIN CIRCUIT AND
THE CONTROL SYSTEM SOFTWARE FOR TMS

ABSTRACT

Transcranial ic stimulation (TMS) technology is a newly noninvasive method for
the stimulation of cortex. It has the advantages of safe, valid, painless, no injury, repeatable and
easy to operate. It has been widely used in the treatment of psychiatric and researches of brain
function. A TMS system is designed in this paper, the analysis of the main circuit and the
software designing of the control circuit are mainly studied.
The general guidelines for designing and constructing a ic stimulator are presented
in this paper, including the basic theories, hardware and ponents, and the problems
encountered in the designing process are discussed. A RLC model of TMS system is built, the
method puting the model parameters are presented, some factors which influents the
ic field intensity are analyzed and discussed, and the elements parameters of the TMS
system are calculated in details. ponents are selected according to the requirement of
the voltage and current. The TMS system has been designed and built finally, and the maximum
value of working voltage can get to . Based on the designing and analyzing of the control
circuit of the TMS system, the control software procedures are made, it can control the charging