超宽带雷达人体呼吸在线检测系统设计

发布时间：2018-02-28 02:55

本文关键词： 超宽带穿墙雷达呼吸检测 Lab VIEW 熵　出处：《电子测量与仪器学报》2016年10期 　论文类型：期刊论文

【摘要】：为解决传统体制的生命检测系统易受目标以及周围环境影响探测结果,同时克服脉冲体制检测系统结构复杂,以及信号处理方面未考虑运算量的问题。提供一种简单、方便、高效的解决方案——基于矢量网络分析仪搭建人体呼吸检测系统。通过Lab VIEW实现仪器控制,采集数据并保存在上位机;在信号处理方面采用熵的方法检测回波数据快时间域上奇异区,仅对奇异区进行快速傅里叶变换(FFT)处理得到人体呼吸频率;利用mathscript进行信号在线处理并将结果在界面显示。通过实验表明,该系统能够检测均匀墙后人体的一维距离以及呼吸频率,实现在线检测的工作模式。该系统的设计证明了方案的有效性且易于实现,以及在信号处理过程中采用熵的方法减小计算量,提高了系统执行效率。
[Abstract]:It provides a simple and convenient way to solve the problem that the traditional life detection system is vulnerable to the target and the surrounding environment, and to overcome the complex structure of the pulse detection system and the problem that the calculation is not considered in the signal processing. An efficient solution-based on vector network analyzer to build a human breathing detection system, through Lab VIEW to achieve instrument control, data collection and storage in the upper computer; In the aspect of signal processing, the method of entropy is used to detect the singular region in the fast time domain of echo data, and only the singular region is processed with fast Fourier transform (FFT) to get the human respiratory rate. Mathscript is used to process the signal on line and display the results at the interface. The experiments show that the system can detect the one-dimensional distance and breathing frequency of the human body behind the uniform wall. The design of the system proves that the scheme is effective and easy to implement, and the entropy method is used to reduce the calculation and improve the efficiency of the system.
【作者单位】：桂林电子科技大学信息与通信学院;广西无线宽带通信与信号处理重点实验室;
【基金】：国家自然科学基金(61461012) 广西区自然科学基金(2013GXNSFAA019329) 广西物联网技术及产业化推进协同创新中心资助项目(WLW20060204) 国家级大学生创新计划项目(201510595007) 桂林电子科技大学研究生教育创新计划(YJCXS201513)资助项目
【分类号】：TH789

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