基于微型化FMCW雷达的抗振乘员健康监测

随着雷达系统的小型化，毫米波雷达在消费电子领域展现了广阔的应用前景。然而，毫米波雷达的车内应用，由于车内环境的复杂性和振动性的特点，依然面临着巨大挑战。为了解决车体振动对雷达探测的影响，本文提出了基于微型化调频连续波（FMCW）雷达的抗车体振动的乘员健康监测方法。该方法利用FMCW雷达将不同距离的物体的运动信息转化为相位信息加载于中频信号的不同频率成分中的特点以及车内乘员位置相对固定的特点，通过仅取乘员位置对应中频频率成分的相位信息，有效隔绝了车体其他部分振动对乘员健康监测的干扰。仿真和实验结果均表明，该方法在车体振动情况下，仍然可以有效工作。

Occupant State Monitoring Against Vehicle Body Vibration Based on FMCW Radar

With the miniaturization of radar system, millimeter-wave radar shows a broad short-range application prospect in the field of consumer electronics. However, the application of millimeter-wave radar in vehicle is still facing great challenges due to the complexity and vibration characteristics of vehicle environment. In order to solve the impact of vehicle body vibration on radar detection, this paper proposes an anti-vehicle body vibration occupant health monitoring method based on Frequency-Modulated Continuous-Wave (FMCW) radar. This method is based on the characteristic of the FMCW radar that the motion information of objects at different distances is converted into phase information stored in different frequency components of the intermediate frequency signal, and the relatively fixed position of the occupant in the vehicle. By only extracting the phase information of the beat frequency corresponding to the occupant, the vibrating clutter from the environment can be effectively isolated. Both simulation and experimental results show that the method can still work effectively under the condition of vehicle body vibration.