CHANG, ROBERT CHEN HAO,张振豪,張振豪,KAO, YU YA,高堉雅,高堉雅,LIN, CHIH HUNG,林志鸿,林志鴻
申请号：
TW104100339
公开号：
TW201625176A
申请日:
2015.01.06
申请国别(地区):
TW
年份:
2016
代理人:
摘要：
A method of heartbeat detecting for drowsiness detection is disclosed. The method comprises detecting the heartbeat signal by body senor. Calculating the heartbeat signal for R-wave to transfer the signal to RRI value. And then proceed the signal calculating process. The process includes to remove the anomaly value range of RRI and to retrieve a renew RRI value. Using the renew RRI value to proceed the sampling again to output a second renew RRI value. Enlarging the second renew RRI value of equality. And then proceeding to transfer the second renew RRI value to frequency spectrum signal. And calculating the he second renew RRI value for fast Fourier transform and power spectral density function. Using the calculating result to compare the numerical value of human body status for judging the driver status. It will help to warm the driver to avoid of car accident.一種用以探測瞌睡狀態之心跳偵測方法,其步驟係包括體外感測器量測駕駛者之心電訊號,將所量測之心電訊號進行R波數值之計算以產生RRI數值,之後進行訊號前處理程序,包括移除所計算RRI數值之異常範圍並產生新RRI數值,再將新RRI數值進行重新取樣程序,之後將重新取樣後之RRI數值等比率放大,將RRI數值進行頻譜訊號轉換,最後,再將RRI數值依序再進行快速傅利葉轉換及功率頻譜密度計算以產生最後之判斷數值結果,以此數值比對人體狀況之統計結果,以提早發現駕駛員是否已經有瞌睡狀態產生,有利提早發出警示來防止交通意外發生。(S1)~(S7)
