基于脉搏频谱分析的监测疲劳驾驶的穿戴式手环设计.pdf

1基于脉搏频谱分析的监测疲劳驾驶的穿戴式手环设计邱健,梁帅,韩鹏,骆开庆?(华南师范大学物理与电信工程学院,广东广州510006)摘要:疲劳驾驶成为了当前交通事故的主要原因之一。如果能针对驾驶员疲劳状态的监测和提醒,将有助于防止疲劳驾驶,减少交通事故的发生。本文基于人在疲劳时刻和清醒时刻脉搏频谱分量的不同,研制了基于FFT脉搏频谱分析,监测和提醒驾驶员疲劳状态的可穿戴式手环。装置基于ARM处理器,采用压敏传感器和信号放大和滤波处理等通用技术,拾取并处理驾驶员的脉搏生理信号;经过FFT获取脉搏信号的频谱分量。根据其中高频分量的比重,进而判断驾驶员的疲劳状态。通过实验得到了判断疲劳状态的阈值,证明该装置的设计方案是可行和可靠的。关键词:检测技术与自动化装置;疲劳检测;脉搏监测;傅里叶频谱分析Design of Wearable Bracelet of Monitoring Fatigue Driving Based on Spectrum Analysis on Human’s PulseQIU Jian, LIANG Shuai, HAN Peng, LUO Kaiqing (School of Physics and munication Engineering, South China Normal University, Guangzhou, Guangdong Province, 510006, China)Abstract:Fatigue is an important factor whichcauses the traffic accident. To prevent fatigue driving is an efficient way to reduce traffic accidents, fatigue driving detection is necessary. Awearablebracelet of real-time detecting fatigue state was studied, whichcould monitor the driver's fatigue state and give a timely on the spectrum differences of human’s throb between the fatigue state and normal state of drivers, a pulse spectrum analyzing wearable device was designed. Thedevice was applied a pressure-sensitive sensor to capture throb signals of drivers. When these signals were processed by amplifier and filter circuits, FFT transform was used to analyze their spectrum. The proportion of high frequ