Vehicle Driving Safety Assistant Systems
Drowsy Driver Protection System（DDPS）
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DDPS adopts CMOS infrared sensor and target image recognition technology to obtain the eye’s character of the driver. PERCLOS algorithm is being used here to be the measurement of the physiological mental fatigue. DDPS could make the judgment of the driver’s fatigue status and make the warning in advance before the driver feel sleepy.
Vehicle Infrared Night Vision System based video（VINVS）
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Using the strong penetrating effect of the infrared, the visible distance of the driver could be increased so much in the rainy or foggy days. - Mark the opposite passengers and vehicles on the screen.
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The key technology includes the barrier recognition based on video and the driveway lines recognition technology.
Lane departure Warning System（LDW）
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LDW uses cameras to watch the vehicle body and the lane’s mark. If the vehicle body exceed either side of the lane’s mark and the driver doesn't make the turn signal light, LDW will warn the driver by noise. On investigation, when a vehicle is driven between 70 and 100 miles/h, LDW can decrease the probability of contingency caused by the lane departure from 30% to 40%.
Tire Pressure Monitoring System Based on Integrated Sensor （TPMS）
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NHTSA made it official: All new passenger cars sold in the U.S. must now have tire pressure monitoring systems (TPMS). Although NHTSA remained “technology neutral” in its mandate, the agency prescribed a set of requirements that lead automotive suppliers in a common direction. Monitoring systems must allow deflation of no more than 25 percent and must detect that deflation within 20 minutes. As such, makers of the systems are employing a so-called “direct” method of monitoring inflation pressures.
