A detection device for metal objects

Abstract

The invention discloses a metal object detection device, which is used to solve a problem of realizing remote detection of hidden metal object (cutters and so on) of a non-cooperative target. The metal object detection device comprises a data processing system; a pulse millimeter wave irradiation source and an infrared imaging device, which are synchronously controlled by the data processing system. Millimeter wave short pulses are irradiated on a target person, and the magnitudes of the millimeter wave short pulses are in a range from 1ms to 1s, and the millimeter wave short pulses have large power density, the magnitudes of which are in a range from 10mW / cm2 to 100w / cm2, and then whether the target person hides the metal object under the clothes is detected, and at the same time, the target person cannot sense the detection or only can feel a little warm. By adopting the technical scheme provided by the invention, the detection of the hidden metal object is realized, and the detection of the hidden cutter of the non-cooperative target is realized in a remote way, especially at a distance of more than 100m, and in addition, the detection is soundless and lightless, and is not easy to sense, and therefore the detection device is widely used in the public security field.

Description

technical field [0001] The invention relates to the field of public security, in particular to a detection device for metal objects, which is used to realize the remote detection of dangerous goods carried by mobile personnel. Background technique [0002] At present, public places, especially those involving a large number of people, generally have security inspection equipment. Detectors, under-vehicle video inspection mirrors, metal detectors in shoes, hose endoscopes, etc. Security inspection equipment is used in public security anti-terrorism, airports, courts, procuratorates, prisons, stations, museums, gymnasiums, exhibition centers, performance venues, entertainment venues and other places that require security checks. [0003] The current security inspection equipment adopts a single cooperative detection, that is, the target must stand beside the detection equipment to scan for detection. The current detection technology of this kind is very mature, and can basic...

AI Technical Summary

Problems solved by technology

For example, in station squares or gathering places, parks, stadiums, etc., where a large number of people flow, it is impossible to achieve one-to-one detection. In this case, if someone is carrying a knife or gun, there is no way to find out , resulting in the occurrence of dangerous events