Heartbeat signal analysis system and method for estimating atrial fibrillation and readable medium

The invention discloses a heartbeat signal analysis method for estimating atrial fibrillation, comprising: providing n consecutive heartbeat information within 5 minutes, n being a positive integer greater than 1; calculating a time different of each heartbeat information between the 0th heartbeat information and the nth heartbeat information to obtain n heartbeat spacing information; calculatinga standard deviation of the heartbeat spacing (SD parameter); determining whether the standard deviation of the heartbeat spacing exceeds a threshold, wherein the threshold is 100; and estimating thatthere is atrial fibrillation if so. The SD parameter used in the present invention is analyzed in time domain, and the standard deviation of all normal heartbeat spacing are analyzed; according to statistical data of many patients and healthy people, the SD parameter can be used to be a predictor of determination for atrial fibrillation in a population, which facilitates rapid screening and can reduce waste of medical res