The invention provides an elevator personnel existence detection method and system based on a millimeter wave radar, and relates to the technical field of detection, and the method comprises the steps: orthogonally arranging a positioning radar and a motion detection radar at the top of an elevator car, collecting radar echo signals, and carrying out baseband demodulation; a positioning baseband signal and a motion detection baseband signal are processed through a dynamic threshold elimination method and a self-adaptive harmonic suppression algorithm respectively, and compensation enhancement is carried out in combination with a geometric structure of the lift car; performing fast Fourier transform on the enhanced signal in the dimensions of distance, speed and height, acquiring three-dimensional coordinate data of a target by adopting an adaptive spatial spectrum decomposition positioning algorithm, and performing non-uniform sampling Doppler processing to obtain target motion track data; a recursive state estimation model is adopted for time sequence tracking, human body height judgment is achieved, and the method is used for safety monitoring in the lift car, and early warning for children and pets entering the lift car independently and early warning for long-time staying in the lift car.
本发明提供一种基于毫米波雷达的电梯人员存在检测方法及系统,涉及检测技术领域,包括在电梯轿厢顶部正交布置定位雷达和运动检测雷达,采集雷达回波信号并进行基带解调;通过动态门限消除法和自适应谐波抑制算法分别处理定位基带信号和运动检测基带信号,结合轿厢几何结构进行补偿增强;对增强后的信号分别进行距离、速度、高度维度的快速傅里叶变换,采用自适应空间谱分解定位算法获取目标三维坐标数据,通过非均匀采样多普勒处理得到目标运动轨迹数据;采用递归状态估计模型进行时序跟踪,实现人体高矮判断,用于轿厢内的安全监测:儿童和宠物单独进入轿厢预警和长时间滞留轿厢预警。
Elevator personnel existence detection method and system based on millimeter wave radar
基于毫米波雷达的电梯人员存在检测方法及系统
07.02.2025
Patent
Elektronische Ressource
Chinesisch
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