Detection method and radar device for detecting life in vehicle

Abstract

The invention discloses a detection method and a radar device for detecting life in a vehicle. The method comprises the following steps: S1, detecting the inside of a target vehicle by using an ultra-wideband radar, and receiving an echo signal of the radar; and S2, performing target detection on the extracted echo signal, determining the position of the outer wall around a vehicle body during thetarget detection, intercepting an internal area of the vehicle from the determined position to obtain an effective detection area, filtering a false alarm target outside the effective detection areafrom the detected target, and outputting a final target detection result. The detection method and the radar device have the advantages of simple detection implementation, high efficiency, capabilityof suppressing false alarms, high detection precision and the like.

Description

technical field [0001] The invention relates to the technical field of vehicle interior life detection, in particular to a detection method and a radar device for vehicle interior life detection. Background technique [0002] In places such as customs docks, parking lots, detention centers, and border security checks, it is necessary to conduct security checks on vehicles to determine whether there are living organisms hidden inside the vehicle. In vehicle safety inspections, vehicles are usually searched directly through human eyes or police dogs. This type of inspection method is inefficient, requires a lot of labor costs, and is prone to missed judgments. Items may be damaged to a certain extent, and it is actually difficult to accurately confirm the condition of the car. [0003] In occasions such as vehicle monitoring in parking lots, there are currently plans to use infrared life detectors to detect and monitor personnel inside vehicles, but infrared life detectors ha...

AI Technical Summary

Problems solved by technology

However, at present, the radar-based detection of life inside the vehicle usually directly analyzes the radar echo signal to determine whether there is a living body, and the detection range of the radar is relatively large, and the targets within the detection range near the vehicle and the outer wall of the vehicle will be detected. Therefore, there will be a large number of false alarms in practice. Although the emission range of radar signals can be reduced to a certain extent by limiting the chip, etc. And the outer wall of the vehicle is difficult to filter out by this method, it will still be detected and cause false alarms

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