Method and device for detecting hidden persons in vehicles

Abstract

The invention discloses a vehicle hiding person detection method and an apparatus thereof. The detection method comprises the following steps of collecting a vehicle vibration signal of a detected vehicle respectively and a ground environment vibration signal of an environment where the detected vehicle is located; calculating an energy value of the vehicle vibration signal, and a correlation value between the vehicle vibration signal and the ground environment vibration signal respectively; and according to the calculated energy value and the correlation value, determining whether there is a hiding person in the detected vehicle. The apparatus comprises a slight vibration detection unit, a data processing unit and a determination unit. In the invention, the vehicle vibration energy value and the correlation value can be fused, and the vehicle hiding person can be accurately detected and distinguished. The method and the apparatus possess advantages that a realization method is simple; detection efficiency and precision are high; environment adaptability is high; and a detection process is safe and reliable and so on.

Description

technical field [0001] The invention relates to the technical field of safety detection, in particular to a method and device for detecting a hidden person in a vehicle. Background technique [0002] At various entrances and exits such as prisons and customs, it is necessary to check the vehicles entering and exiting to prevent people from hiding in them. At present, equipment such as microwave radar life detectors, X-ray detectors, and microseismic detectors are usually used to detect whether there are people hiding. However, the above-mentioned detection equipment has certain limitations. Among them, the microwave radar life detector has limited penetration ability to obstacles. For large vehicles fully loaded with goods, this type of equipment cannot fully detect all positions of the truck; There is a risk of X-ray radiation for operators and truck drivers. [0003] The microseismic detector detects the tiny vibration energy of human heartbeat and breathing in the vehic...

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Problems solved by technology

However, the above-mentioned detection equipment has certain limitations. Among them, the microwave radar life detector has limited penetration ability to obstacles. For large vehicles fully loaded with goods, this type of equipment cannot fully detect all positions of the truck; There is a risk of X-ray radiation for operators and truck drivers

[0003] The microseismic detector detects the tiny vibration energy of human heartbeat and breathing in the vehicle through the acceleration sensor. The detection effect is good and there is no electromagnetic radiation. However, the main detection principle of the existing microseismic detector is based on energy detection, that is, within a certain frequency range. The energy transmitted to the vehicle by human breathing and heartbeat is extremely weak, and the difference between the position of the acceleration sensor and the position of the hiding person will cause the strength of the collected signal to be different. If the location of the person is relatively close, the collected data contains a strong signal of human activity. If the two are relatively far away, the collected data contains a weak signal of human activity. Only based on energy detection to determine whether the vehicle is hiding a person, erroneous The possibility of judgment is very high, and the detection and recognition accuracy is not high

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