基于脉搏波检测的驾驶员睡意预警装置

Driver drowsiness warning devicebased on pulse wave detection

摘要:

随着驾驶员人数的不断增加，不文明的驾驶行为也越来越多，其中由于疲劳驾驶所引发的交通事故占据相当大的比例，给人民的生命和财产造成了巨大的损失，因此，对于驾驶员睡意预警装置的技术研究具有非常重要的意义和实用价值。通过对人体脉搏波信号进行分析处理，采用能够反映驾驶员睡意状态的脉搏频率特征信号作为依据，由STC89C52单片机、按键、数码管、光电传感器、时钟模块、滤波电路、集成运放等构成系统，设计了驾驶员睡意预警装置。调试结果显示该装置识别准确率高，数值可靠，能够有效的检测驾驶员的睡意状态，并在睡意状态时发出预警。对比市场同类型产品，该装置具有成本低廉，操作简单，能够实现车载等特点，为驾驶员睡意预警技术的相关研究提供了一定的技术和实验基础。

Abstract:

With the increasing number of drivers, uncivilized driving behavior is more and more. The traffic accidents caused by fatigue driving occupy a large proportion, causing great losses to people's lives and property. Therefore, it is of great significance and practical value for the technical research of driver drowsiness warning device. Based on the analysis and processing of human pulse wave signal, the pulse frequency characteristic signal which can reflect the sleepy state of the driver is used as the basis. The driver drowsiness warning device is composed of STC89C52 microcontroller, buttons, digital tube, photoelectric sensor, clock module, filter circuit , integrated operational amplifier and so on. The results of debugging show that the device identification accuracy, numerical reliability, can effectively detect the driver drowsiness, and issued a warning in the sleep state. Compared to the same type of product in the market, the device has the characteristics of low cost, simple operation and the ability to carry on the vehicle, to provide technical and experimental basis for related research of driver drowsiness warning technology.