针对传统脉搏波传导时间（PTT）检测方法对脉搏波（PPG）信号幅值变化敏感、计算量大等问题，提出了一种综合波形时域特征和动态差分阈值的 PTT 检测算法。采用动态差分阈值检测心电（ECG）信号 R 波，根据波形时域特征缩短脉搏波信号主波检测区间，利用 R 波检测脉搏波信号主波，从而计算 PTT。利用美国麻省理工学院 MIMIC 数据库和实验室实测数据对上述算法进行验证。结果表明，该方法能够准确地提取特征点并检测出 PTT，对实测和数据库样本的 PTT 检测准确率分别为 99.1% 和 97.5%，效果优于传统检测方法
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