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本文介绍的胸外按压闭环控制是在胸外按压心肺复苏中引入冠脉灌注压(CPP)标准来调节按压深度的自动控制技术。它采用个性化急救方案,突破了以统一的按压深度和频率为标准评价胸外按压质量而忽视患者个体差异的局限性,对提高胸外按压效率有着重要意义。本研究重建了Charles F.Babbs人体血液循环模型,添加了CPP检测模块,设计了闭环胸外按压自动控制器,并进行了计算机仿真实验。实验表明,基于模糊控制的闭环胸外按压控制器,不但调节时间短,超调量小,而且几乎无振荡现象发生;在有效调节和稳定维持CPP方面,均表现出了优异的控制性能。
The closed-chest control of chest compressions introduced in this paper is an automatic control technique that adjusts the depth of pressure by introducing the standard of coronary perfusion pressure (CPP) in cardiopulmonary resuscitation. It uses a personalized first aid program that breaks through the limitations of evaluating the quality of chest compressions without regard to individual differences with a uniform depth and frequency of compression and is of great significance for improving the efficiency of chest compressions. In this study, Charles F.Babbs human blood circulation model was rebuilt, CPP detection module was added, closed-loop chest compressions automatic controller was designed, and the computer simulation experiment was carried out. Experiments show that closed-loop thoracic pressure controller based on fuzzy control not only has short regulation time and small overshoot, but also has almost no oscillation. It also shows excellent control performance in effectively regulating and maintaining CPP.