Safety inspection system based on conjugate electromagnetic transmit-receive array broadband detection and visual display and method thereof

Abstract

The invention provides a safety inspection system based on conjugate electromagnetic transmit-receive array broadband detection and visual display and a method thereof. The safety inspection system comprises a safety inspection detection front-end, a data processing background and a supporting frame. Conjugate electromagnetic transmit-receive units are provided at the safety inspection detection front-end so that transmitting and non-interference and low-interference directional magnetic receiving of a broadband detection magnetic signal can be realized. Coils are wound on two coil cores with the same geometrical shape so that conjugate electromagnetic transmitting pair are formed. A coil winding mode and the size and direction of current in the coils are adjusted so that magnetic field intensity of the coils at the geometric centre is enabled to be zero. Multiple conjugate electromagnetic transmitting pairs sharing the geometric centre are combined to form conjugate electromagnetic transmitting units. Directional magnetic receiving elements are arranged at the positions with no magnetic field or weak magnetic field of the conjugate electromagnetic transmitting units so that the conjugate electromagnetic transmit-receive units are obtained. The detected and received signals are processed and color-displayed at the data processing background. The size, the attribute and the position of a metal conductor can be rapidly and accurately detected and displayed by the system.

Description

Technical field: [0001] The invention relates to the field of security detection systems, in particular to a conjugate electromagnetic transceiver array-based broadband detection and visual display security inspection system and method. Background technique: [0002] The metal security inspection system is used to check hidden metal objects on the human body, such as guns, controlled knives, etc., and is widely used in airports, stations, courts, large conference venues and other public places with a large flow of people. In these places, there are many people, and criminals often carry knives and guns and other prohibited items to wait for the opportunity to commit crimes, causing heavy casualties and property losses, and causing extremely bad negative impacts on society. The metal security inspection system is one of the most effective tools. It has been widely used in important security facilities such as airports. It is one of the effective security tools that have been ...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problems of poor anti-interference, low detection accuracy, and non-visualization of the existing metal security door system, the present invention proposes a security inspection system and method based on conjugate electromagnetic transceiver array broadband detection and visual display, using conjugate electromagnetic The transceiver array realizes the transmission of broadband electromagnetic detection signals and the reception of non-interference or low-interference magnetic signals. The digital signal processing method is used to extract the outline of the detected target and analyze the detection data, and display it in a color visual interface to achieve convenient, fast and accurate security inspection. system

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