基于光纤光栅传感器的人体心率测量技术研究

Research on human heartrate measurement based on fiber Bragg grating sensor technology

光纤光栅以其抗电磁干扰、体积小、寿命长、柔韧性好等特点,是构成智能服装的最具潜力的材料。文中根据人体心率信号的特点,设计了由金属材质构成的振动腔,采用ANSYS分析了腔的振动过程,确定了光纤光栅的封装方式,并在实验室中实现了心率信号的采集,完成了数据分析与信号提取的算法。实验结果表明:该传感器可完成人体心率信号的实时在线的采集与分析,测量误差小于1次/min。

FBG is the most potential material for intelligent clothing because it has the characteristics such as anti-electromagnetic interference, small size,long life and good flexibility. According to the characteristics of the human heartrate signal, the metal vibration cavity was designed. ANSYS was used to analysis the vibration of the cavity and determined the the FBG package method. Then in the laboratory the system achieved heart rate signal acquisition,completed the data analysis and signal extraction algorithms. The experimental results show that：the sensor completed signal acquisition and analysis in real-time online and the measurement error is less than 1 times/min.