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基于D类放大器的外置式DBS的驱动电路设计 被引量:2

Design of Driving Circuit for External DBS Based on Class D
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摘要 以DBS的治疗参数为依据,设计了外置式DBS的驱动电路。以单片机MSP430的PWM输出作为信号源,来控制D类放大器的开关,D类放大器的双端输出用以驱动初级线圈。通过实验可在模拟负载两端获得有效的单极性刺激脉冲,此脉冲会随着信号源的频率,占空比等参数的变化发生相应的变化,并且得到了3%的传输效率,证明了D类放大器用于外置式DBS的驱动电路的可行性。 Based on stimulating parameters of DBS,The external DBS drive circuits are designed.PWM signal from singlechip MSP430 drives Class D and differential outputs of Class D connect primary coils.The result show that unipolar pulses can get from simulated load and the change of the pulses correspond with the change of signal source,frequency and duty cycle.After the calculation,transmission efficiency is 3%.All of these prove that Class D can drives external DBS effectively.
作者 李刚 白冰 林凌 于超 Gang Li; Bing Bai; Ling Lin; Chao Yu(Biomedical Signal Detecting and Processing Laboratory in Tianjin University; Tianjin University; 300072);
出处 《生命科学仪器》 2009年第3期,共4页 Life Science Instruments
关键词 外置式脑起搏器 D类放大器 驱动电路 单极性脉冲 External DBS Class D drive circuits unipolar pulses
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