Telescopic portable imaging detector and portable x-ray detection instrument

Abstract

The invention provides a telescopic portable imaging detector and a portable x-ray detection instrument. The portable x-ray detection instrument comprises a portable x-ray machine, a telescopic portable imaging detector and a computer, wherein the portable x-ray machine is in optical communication connection with the telescopic portable imaging detector; and the telescopic portable imaging detector is connected with the computer. The telescopic portable imaging detector comprises an imaging box body, an intensifying screen, a vidicon and a sliding mechanism, wherein the intensifying screen is arranged on the inner side of the imaging box body; the vidicon is arranged in the imaging box body; the camera lens of the vidicon faces to the intensifying screen; the sliding mechanism is arranged in the imaging box body and can extend to the exterior of the imaging box body in a sliding mode; the vidicon is fixed on the sliding mechanism; and the vidicon is driven by the sliding mechanism to linearly move with a preset distance along the direction vertical to the intensifying screen. By utilizing the portable x-ray detection instrument, two modes of wire and wireless are adopted, the portable x-ray machine does not need to be synchronous with the imaging detector, outlaid wires and cables are reduced, the volume is small, and the portable x-ray detection instrument is convenient to carry and use.

Description

technical field [0001] The invention belongs to the technical field of radiation imaging safety detection and relates to a detector, in particular to a telescopic portable imaging detector and a portable X-ray detector. Background technique [0002] At present, portable X-ray detectors are characterized by portability, flexibility, and high detection efficiency. They are widely used in security inspections, anti-terrorist explosives, anti-drugs, firefighting, and on-site security inspections of unidentified bags. There are two types of portable X-ray detectors commonly used today: CCD-based and line-array-based. [0003] CCD-based portable X-ray detectors use scintillation screen coupled CCD detectors, such as figure 1 As shown, there is a rare-earth fluorescent screen in the detector (the fluorescent intensifying screen used in medical filming). After X-rays pass through the object, they are irradiated on the rare-earth fluorescent screen to generate fluorescence, and then...

AI Technical Summary

Problems solved by technology

The CCD-based portable X-ray detector has two main disadvantages: 1) The fluorescent image is reflected by a mirror, and energy loss will inevitably occur due to multiple refractions, which further attenuates the energy signal of the fluorescent image in principle

The actual effect also proves that the collected image has poor contrast, low detection sensitivity, and the volume of the CCD imaging detector is relatively large; in addition, the angle of the mirror also affects the size of the detection area

2) To keep the information received by the pulsed X-ray machine and the CCD detector synchronized, as well as the power supply of the detection box, too many external lines are required, which is inconvenient to use

[0004] The disadvantage of the portable X-ray inspection instrument based on the line array detector is that the mechanical device is driven and the data acquisition speed is slow

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