【摘要】 根据人体经络动态电阻抗的检测精度、抗干扰、低噪声等特殊指标的要求,对影响经络特性电子检测系统中的关键部分,取样放大电路的噪声源、噪声产生机理进行了分析,提出了降低噪声设计、提高检测精度的措施和方法,确定了电路中的关键元器件的参数,在实际应用中达到了预期效果。更多还原

【Abstract】 The special targets of human meridian dynamic impedance such as testing precision, anti-jamming, low noise and so on are studied. Based on the analysis of the key parts —— the noise source of sampling amplification circuits and noise generative mechanism, which affect the human meridian electronic testing system, measures of depressing noise design and raising testing precision are discussed in detail. The key parameters in circuits are given by means of orthogonal test. Applications have achieved anticipated effects.更多还原