The invention relates to the field of radar detection, and provides a living body detection method and device, electronic equipment and a vehicle, and the method comprises the steps: receiving a living body detection instruction, and outputting a living body detection signal; receiving an echo signal corresponding to the living body detection signal, and determining an initial signal-to-noise ratio corresponding to the echo signal; performing signal-to-noise ratio enhancement processing on the initial signal-to-noise ratio to obtain a target signal-to-noise ratio; determining an echo amplitude corresponding to the echo signal according to the target signal-to-noise ratio; and in response to the echo amplitude being greater than a preset threshold, determining that a living body exists at a position corresponding to the echo signal. The signal-to-noise ratio of the echo signal is enhanced, so that the signal-to-noise ratio of the signal corresponding to the living body detected at a relatively far position is improved, and the difference of the echo signal between the relatively far living body and the non-living body is distinguished. And when the echo amplitude is determined to be greater than the preset threshold value, it is indicated that the living body exists at the position corresponding to the echo signal at the moment, accurate detection of the living body at a relatively long distance is realized, and the problem of missing alarm of the living body at the relatively long distance is avoided.

    本公开涉及雷达探测领域,提供了一种活体检测方法、装置、电子设备及车辆,接收到活体检测指令,输出活体探测信号;接收活体探测信号对应的回波信号,确定回波信号对应的初始信噪比;对初始信噪比进行信噪比加强处理,得到目标信噪比;根据目标信噪比确定回波信号对应的回波幅值;响应于回波幅值大于预设阈值,确定回波信号对应的位置存在活体。通过对回波信号的信噪比进行加强处理,进而提高较远处探测到的活体对应的信号的信噪比,以区分开较远处活体与无活体之间回波信号的不同。当确定回波幅值大于预设阈值时,此时表示该回波信号对应的位置处存在活体,实现了对于较远处活体的准确探测,避免出现较远处活体漏报警的问题。


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    Title :

    Living body detection method and device, electronic equipment and vehicle


    Additional title:

    活体检测方法、装置、电子设备及车辆


    Contributors:
    SHEN LINAN (author) / WANG HONGDA (author) / WANG CHANGXU (author)

    Publication date :

    2025-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    A61B DIAGNOSIS , Diagnostik / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01S RADIO DIRECTION-FINDING , Funkpeilung



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