DRIVER SLEEPINESS PREVENT DEVICE

摘要

A driver sleepiness protection device is provided to determine whether a driver is in a drowsiness state or not accurately and warn the driver by extracting heart rate variable(HRV) from pulse signals. A detection unit(10) measures the pulse of a driver. An A/D converter(41) converts the measured analog pulse signal through the detection unit into a digital signal. A signal analyzer(43) frequency- analyzes the digital pulse signal transformed from the A/D converter. A controller(40) determines the driver is in a drowsiness state in case a high frequency component increases in the signal inputted through the detection unit. An external interface(20) inputs necessary setup information for frequency analysis through the controller. A warning unit(30) warns the driver in case the controller determines that the driver is in a drowsiness state.