The invention provides an automobile anti-theft detection system and method, and an automobile. the system comprises: a signal generation module used for generating a delay signal and a non-delay signal according to a preset frequency; an ultra-wideband radar module used for sending a non-delay signal and receiving an echo signal corresponding to the non-delay signal; a feature extraction module used for preprocessing the echo signal according to the delay signal to obtain a feature signal; and a judgment module used for acquiring a frequency spectrum value in the feature signal and judging that the life body exists in the automobile when the frequency spectrum value reaches a preset living body frequency spectrum threshold value. According to the invention, an ultra-wideband radar is used, the transmitted signal is high in frequency and wide in bandwidth, and the influence of the environment temperature on the detection precision is reduced; the life body and the non-life body are distinguished according to the frequency spectrum value of the feature signal, so that the detection result is more accurate; and the system is applied to the interior of a vehicle body, and avoids the situation that pedestrians and animals beside the vehicle pass by and mistakenly trigger alarms.
本发明提供了一种汽车防盗检测系统、方法及汽车,包括信号发生模块,用于按照一预设的频率产生延时信号和未延时信号;超宽带雷达模块,用于发送未延时信号,接收未延时信号对应的回波信号;特征提取模块,用于根据延时信号对回波信号进行预处理,得到特征信号;判断模块,用于获取特征信号中的频谱值,并在频谱值达到预先设置的活体频谱阈值时,判定汽车内存在生命体。本发明使用超宽带雷达,发射出的信号频率高、带宽宽,降低了环境温度对于检测精度的影响;根据特征信号的频谱值进行生命体和非生命体的区分,检测结果更精确;且应用于车身内部,杜绝了车旁行人、动物路过而误触发告警的情况。
Automobile anti-theft detection system and method, and automobile
一种汽车防盗检测系统、方法及汽车
2021-07-23
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |