高压陡脉冲发生器的设计与实现

摘要

According to the requirements of high voltage electrical pulse ablation, a high-voltage and steep pulse generator is designed and built. The whole frame of the high-voltage and steep pulse generator is introduced and the work process of generator is illustrated. The structure and principle of charge module and pulse generation module are introduced in detail. According to way of working of the main circuit, a controller with DSP+CPLD architecture is designed. The controller contains DSP module, CPLD module, communication interface between DSP and CPLD and interface circuit in that different anti-interference designs are used to guarantee transmission quality according to analog signal and digital signal and different frequency of signal. The discharge experiment indicates that performance of the circuit meet the requirements of high voltage electrical pulse ablation.%根据高压电脉冲消融的条件, 设计并搭建了高压陡脉冲发生器.介绍了高压陡脉冲发生器的整体结构, 阐述了脉冲发生器的工作过程, 详细介绍了充电模块和脉冲发生模块的结构组成和工作原理.针对主电路的工作方式, 设计了高压陡脉冲发生器控制器, 控制器采用DSP+CPLD的主控架构, 包括DSP模块、CPLD模块、通讯接口以及底层接口电路的设计.在底层接口电路中, 针对模拟信号和数字信号特性以及信号频率等采取了不同抗干扰措施, 以提高信号传输质量.放电试验表明, 电路性能满足高压电脉冲消融的治疗要求.