Prediction method and device for pregnancy based on dynamic time warping algorithm

• Main Authors: MA JIANTING, XU JINSHAN, CHEN YIXIANG, ZHANG SHENGZHI
• Format: Patent
• Language: Chinese; English
• Published: 10.06.2025
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The invention discloses a pregnancy prediction method and device based on a dynamic time warping algorithm, and the method comprises the steps: 1), obtaining an original 16-channel EHG signal, carrying out the preprocessing, obtaining a 12 * 12 bipolar signal, dividing a uterine contraction window, and obtaining an EHG signal of a uterine contraction segment corresponding to a TOCO signal; 2) for 12 * 12 bipolar signals, calculating the DTW distance between different bipolar signals by using a dynamic time warping algorithm, measuring the similarity between the signals through the DTW distance, obtaining a 12 * 12 DTW matrix, and visualizing the 12 * 12 DTW matrix; 3) according to the DTW matrixes of different subjects in different pregnancy periods, evaluating changes of the visual DTW matrixes of different subjects in different pregnancy periods; observing how the average DTW distance between the electrodes in the horizontal and vertical directions varies with the progression of pregnancy; evaluating the di