Lightweight Blood Pressure Estimation Algorithm

Subjects are categorized into three groups based on office blood pressure threshold: Normal (N), Prehypertension (P), and Stage 1 Hypertension (S). Each group contains 100 subjects, and all records have duration of at least 8 minutes. This study uses sliding window with length of 1 second and step size of 1 second to segment records. PPG, ECG and BP yield 167432 segments, respectively. MAP, DBP, and SBP are defined as average, minimum, and maximum of each BP segment, respectively. Max-Min normalization is applied to PPG and ECG segments. 受试者根据诊室血压阈值分为三组：正常组（N）、高血压前期组（P）和1级高血压组（S）。每组包含100名受试者，所有记录的持续时间均不少于8分钟。本研究采用长度为1秒、步长为1秒的滑动窗口对记录进行分割。光电容积脉搏波（PPG）、心电图（ECG）和血压（BP）分别生成167432个片段。平均动脉压（MAP）、舒张压（DBP）和收缩压（SBP）分别定义为每个血压片段的平均值、最小值和最大值。对光电容积脉搏波（PPG）和心电图（ECG）片段进行最大-最小归一化（Max-Min normalization）处理。