Lee S H, Choi W W, Min B G
Department of Biomedical Engineering, College of Medicine, Seoul National University, Korea.
ASAIO Trans. 1991 Jul-Sep;37(3):M505-7.
Using a one chip microcontroller, 87C196 (One chip EPROM), and an erasable and programmable logic device (EPLD), an implantable control system to drive a pendulum type electromechanical total artificial heart was developed. This control system consists of four parts: a main management system, a motor driver with power regulator, a state monitoring system, and a communication portion. The main system has a speed detector, proportional and integral (PI) control, pulse width modulation (PWM) generation, serial communication, and an analog data processor. Two kinds of power system are used, separated by eight photocoupler arrays to improve system stability. When the performance of each compartment was compared with that of the previously used Z80 microprocessor based control system, good correspondence was shown. Logic power consumption was reduced to one third that of the previous controller. Using mock circulation tests, the overall performance of the control system was evaluated.
利用一片87C196单片机（一片式可擦除可编程只读存储器）和一个可擦除可编程逻辑器件（EPLD），开发了一种用于驱动摆锤式机电全人工心脏的植入式控制系统。该控制系统由四个部分组成：主管理系统、带功率调节器的电机驱动器、状态监测系统和通信部分。主系统有一个速度检测器、比例积分（PI）控制、脉宽调制（PWM）生成、串行通信和一个模拟数据处理器。使用了两种电源系统，由八个光电耦合器阵列隔开以提高系统稳定性。当将每个部分的性能与先前使用的基于Z80微处理器的控制系统的性能进行比较时，显示出良好的一致性。逻辑功耗降低到先前控制器的三分之一。通过模拟循环测试对控制系统的整体性能进行了评估。
