Teyfouri Niloufar, Shirvani Hossein, Shamsoddini Alireza
Medical Image and Signal Processing Research Center, Department of Bioelectrics and Biomedical Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
J Med Signals Sens. 2021 Jul 21;11(3):217-221. doi: 10.4103/jmss.JMSS_31_20. eCollection 2021 Jul-Sep.
In this study, an electronic system based on driver's neck position and blinking duration is designed to help prevent car crashed due to driver drowsiness. When a driver falls in sleep his/her head is felled down. Hence, driver's neck posture can be a good sign of sleep which is measured utilizing a two?dimensional accelerator. However, this sign is not enough because he/she may need to look down during a drive and alarming driver by every moving down of head can be annoying.
Thus, in this system, we used blinking duration too. When a person is awake, blinks more frequently than when he is drowsy.
As a result, in this system, blinking is detected using an infrared transceiver and if both conditions, i.e., neck posture and blinking duration are showing signs of sleep mode, driver will be alarmed.
In this study, it is designed 2D accelerometer and IR sensor based system to measure the driver's neck angle and detect driver's blinking to realize the drowsiness of vehicle drivers and alert them using these signs of drowsiness.
在本研究中,设计了一种基于驾驶员颈部位置和眨眼持续时间的电子系统,以帮助预防因驾驶员困倦导致的车祸。当驾驶员入睡时,其头部会下垂。因此,驾驶员的颈部姿势可以作为睡眠的一个良好指标,利用二维加速度计进行测量。然而,这个指标并不够充分,因为驾驶员在驾驶过程中可能需要低头,而且每次头部向下移动就发出警报可能会令人厌烦。
因此,在本系统中,我们也使用了眨眼持续时间。人清醒时比困倦时眨眼更频繁。
结果,在本系统中,使用红外收发器检测眨眼情况,并且如果颈部姿势和眨眼持续时间这两个条件都显示出睡眠模式的迹象,驾驶员就会收到警报。
在本研究中,设计了基于二维加速度计和红外传感器的系统,以测量驾驶员的颈部角度并检测驾驶员的眨眼情况,从而识别车辆驾驶员的困倦状态,并利用这些困倦迹象向他们发出警报。