The invention discloses a car position measuring method, device and system. Obtaining a first echo signal of the first radar signal reflected by the reference object and a second echo signal of the second radar signal reflected by the reference object, calculating a first intermediate frequency signal based on the first radar signal and the first echo signal, and calculating a second intermediate frequency signal based on the second radar signal and the second echo signal, and respectively performing fast Fourier transform on the first intermediate-frequency signal and the second intermediate-frequency signal to obtain a frequency-signal intensity relationship corresponding to the first intermediate-frequency signal and a frequency-signal intensity relationship corresponding to the second intermediate-frequency signal, searching a peak point representing the reference substance, and calculating the distance between the car and the reference substance based on the frequency of the peak point. Compared with an existing scheme, the method does not need a reference substance made of a special material, does not need to learn distance characteristics of several sub-reference substances, and is lower in cost.

    本发明公开了一种轿厢位置测量方法、装置及系统。获取第一雷达信号经基准物反射的第一回波信号,以及第二雷达信号经基准物反射的第二回波信号,基于第一雷达信号和第一回波信号计算第一中频信号,以及基于第二雷达信号和第二回波信号计算第二中频信号,分别对第一中频信号和第二中频信号进行快速傅里叶变换,得到第一中频信号对应的频率‑信号强度关系和第二中频信号对应的频率‑信号强度关系,从中查找表征基准物的峰值点,基于峰值点的频率计算轿厢与基准物的距离。相对于现有的方案,本发明无需特殊材料的基准物,也无需学习几个子基准物的距离特征,成本更低。


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    Title :

    Lift car position measuring method, device and system


    Additional title:

    一种轿厢位置测量方法、装置及系统


    Contributors:
    LIU XIANZHAO (author) / CHEN GANG (author) / TANG QIWEI (author)

    Publication date :

    2023-12-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / G01S RADIO DIRECTION-FINDING , Funkpeilung



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