Security check device and method based on sparse array

Abstract

The invention discloses a security check device and method based on a sparse array. The security check device comprises a servo system, an antenna arm, a switch and a processor. The servo system controls the antenna arm to rotate; the servo system continuously feeds back real-time angle information in the rotating process of the antenna arm to the processor through the switch; the processor monitors the angle information transmitted by the servo system in real time and calculates the increment of the angle information, the processor gives a group of control signals of the sparse transmitting antenna array and the sparse receiving antenna array when the angle is increased by delta theta, and electric scanning of the sparse transmitting antenna array and the sparse receiving antenna array iscompleted. And according to an imaging result of the processor, after detection is carried out through a deep learning algorithm, whether the detected person carries dangerous goods or not is determined.

Description

Technical field [0001] The invention relates to a security inspection device and method based on a sparse array, and relates to the field of millimeter wave security inspection imaging. Background technique [0002] In recent years, terrorist attacks at home and abroad have occurred frequently, and there are more and more types of dangerous goods. Traditional security inspection methods have not met the needs of the current security inspection market. Traditional metal detectors can only detect metal contraband, and are powerless against plastic bombs and ceramic knives. Although X-ray security inspection equipment can detect all prohibited items, it poses a certain threat to human health and is not the best security inspection method. At present, millimeter wave three-dimensional imaging technology is an effective method to replace traditional security inspection methods. L3’s cylindrical scanning 3D imaging system, RS’s QPS 3D imaging system and Smith’s reflector antenna array...

AI Technical Summary

Problems solved by technology

At present, the millimeter-wave security inspection equipment on the market has the disadvantages of a large number of transceiver units and a long imaging time.

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