基于毫米波的非接触生命参数检测系统的研制(英文)

Study on a Non-contact Life Parameter Detection System Using Millimeter Wave *

目的研究基于 36GHz毫米波的非接触生命参数检测系统原理和技术方法。方法将连续波雷达技术和生物医学信号处理技术相结合 ,采用了零中频、频域积累及自适应对消技术。结果在 3m距离内 ,发射功率为 1mW的条件下 ,可以穿透被褥、各类质地衣服检测到人体的呼吸、心跳信号。结论该系统有效、可行 ,其检测灵敏度高 ,对人体安全 ,天线小 ,结构简单 ,易于小型化 ,适合于长时间的非接触监护 ,特别适用于航天领域。

Objective To study the basic principle and design method of a non-contact life detection system using 36 GHz millimeter wave. Method Continuous wave radar techniques and signal processing techniques including zero intermediate frequency, frequency domain accumulation and adaptive noise cancellation were used in the system. Result When the radiated power was about a milliwatt (mW) and detection range was up to 3 meters, the experimental results showed that this system can well detect the heartbeat and respiration signals from human subjects through common clothes and quilts. Conclusion The system is feasible and effective due to its high detection sensiti-vity, small antenna, simple structure, easy miniaturization and safety to the human subject. It can be used for long-term continuous monitoring, especially suitable for the astronauts.