A control device for x-ray beams in a green channel detection system

Abstract

The invention discloses an X-ray beam control device in a green channel detection system. A pre-collimator only gives out fan-shaped X-ray beams for parts required by items through slits; when X-rays need to be emitted out, slits in a sliding lead device align to slits in the pre-collimator by moving fast; when no X-rays need to be emitted, the slits in the pre-collimator are blocked by the sliding lead device to achieve the shielding effect, a periphery fixed lead device is additionally arranged on the outer side of the sliding lead device, and slits in the periphery fixed lead device align to the slits in the pre-collimator so that the X-rays can only be emitted out through the slit, on the outermost side, in the fixed lead device. According to the X-ray beam control device in the green channel detection system, the ray beams are fast and accurately cut off without stopping the X-rays so that the ray beams can be emitted out according to an assigned area, and the requirement that when the ray beams are cut off, the X-ray dose is safe and does not exceed standards is met.

Description

technical field [0001] The invention belongs to the technical field of non-destructive detection of transmission imaging technology in traffic and transportation management systems, and in particular relates to a control device for X-ray beams in a green channel detection system. Background technique [0002] In recent years, with the implementation of the national policy of establishing a green channel for fresh and live agricultural and sideline products on expressways, green channel testing equipment has also emerged in an endless stream. A green channel vehicle detector using X-ray transmission has been recognized by the transportation department and the environmental department for its advantages of small radiation dose, strong penetrating power, and long life cycle. Even if an accident occurs, it will not affect the surrounding environment and operators. . It uses the principle of ray transmission imaging. The fan-shaped ray beam emitted by the X-ray machine penetrate...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the environmental pollution and driver's personal safety problems caused by X-rays in the green channel detection system in the prior art, the present invention provides a method to quickly and accurately cut off the X-ray beams without shutting off the X-rays, so that The X-ray beam is emitted according to the designated area, and it meets the X-ray beam control device in the green channel detection system where the X-ray dose is safe and does not exceed the standard when the X-ray beam is cut off.

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