Radiation source control method and rapid pass type security check system

Abstract

The invention discloses a radiation source control method. The method includes the steps of obtaining a detector signal through a radiation beam detector after a radiation source starts to transmit a first radiation beam to scan a detected object, conducting image recognition on the detector signal through an image recognition algorithm so that whether the current scanning position is the boundary position of the detected object or not, and controlling the radiation source to start to transmit a second radiation beam when detecting that the current scanning position is the boundary position of the detected object. The invention further discloses a rapid pass type security check system. By means of the radiation source control method and the rapid pass type security check system, the boundary position of a vehicle cab and a goods area can be accurately and rapidly judged.

Description

technical field [0001] The invention relates to the technical field of radiation imaging, in particular to a radiation source control method and a speed-through security inspection system using the method. Background technique [0002] In the vehicle safety inspection process, the non-stop inspection technology based on the automatic scanning process control of the radiation source has a very high pass rate, and the safety inspection efficiency is high. In non-stop inspection technology, in order to ensure the safety of the driver in the cab, it is necessary to avoid radiation in the cab, that is, only when the cab leaves the radiation inspection position is it allowed to emit high-energy, high-dose-rate radiation beams, and only for those behind the cab The goods in the cargo compartment are scanned and inspected. Because the cab is not scanned, there is a security gap. In order to eliminate this safety loophole, the full-vehicle differential scanning technology can be us...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the radiation source control schemes used for vehicle non-stop inspection use ground sensing coils, light curtains, photoelectric sensors, laser distance sensors, laser scanners and other hardware devices to identify the location of the cab, which can meet the needs of use to a certain extent, but There are also the following disadvantages: on the one hand, hardware devices such as sensors need to be specially installed and arranged, the initial investment cost is high, and various devices are easily affected by the environment (such as rain, snow, sand, etc.), the failure rate of equipment is high, and the maintenance cost is high. On the other hand, hardware devices such as sensors are susceptible to recognition errors due to the influence of vehicle decorations, coverings, etc., resulting in missed scanning of the cargo compartment, or even wrong scanning of the cab

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