基于数字信号处理的超声手术刀电源控制电路设计与实现

摘要

目的:自主研制一款超声手术刀电源控制系统, 以减少能量的消耗, 维持手术刀的正常温度.方法:对超声换能器在谐振附近的等效电路建立模型, 并设计基于数字信号处理 (DSP) 的超声手术刀的硬件控制系统.结果:经对电源控制系统的电路和工作性能测试, 生成的电流和电压的有效值等参数, 能够及时调整电源的频率, 并达到预期的功能指标, 使超声手术刀工作在谐振状态.结论:以DSP为核心设计的超声手术刀电源控制系统, 测试指标均能够达到预期的要求, 能够使系统在谐振状态下工作.%Objective:To independently develop a power control system of ultrasonic scalpel so as to reduce the energy consumption and maintain the normal temperature of ultrasonic scalpel.Methods:In this paper, the model of equivalent circuit of ultrasonic transducer nearby syntony was built up, and the hardware control system of ultrasonic scalpel based on digital signal processing (DSP) was designed.Results:Through testing the circuit and work performance of power control system, the series of parameters such as effective value and so on which were produced by this system could adjust frequency of power source in time and attain anticipative functional indicator, and it took the ultrasonic scalpel to work in syntonic situation.Conclusion:The tested indicators of power control system of ultrasonic scalpel based on the kernel design of DSP can attain anticipative requirement, and can take this system to work in syntonic situation.