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Portable X-ray detector based on highly sensitive line array detector

An X-ray, portable technology, applied in the field of X-ray detection devices, can solve the problems of large volume, low detection sensitivity, and poor image contrast, and achieve the effect of small size, high detection sensitivity, and good image contrast

Active Publication Date: 2009-11-11
PURPLE SQUARE TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Poor image contrast, low detection sensitivity, and large size

Method used

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  • Portable X-ray detector based on highly sensitive line array detector
  • Portable X-ray detector based on highly sensitive line array detector
  • Portable X-ray detector based on highly sensitive line array detector

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specific Embodiment

[0035] Portable X-ray detectors based on highly sensitive line array detectors mainly include five key technologies: X-ray highly sensitive line array detectors, high-performance data acquisition systems, portable detection box mechanical scanning devices, X-ray machines, and image acquisition software.

[0036] The following is a detailed introduction to each component:

[0037] 1. Highly sensitive X-ray line array detector:

[0038] Such as image 3 As shown, the highly sensitive line array detector SLDA (Sensibility Linear Diode Arrays) is mainly composed of a scintillation crystal and a photodiode array.

[0039] The scintillation crystal used in this embodiment is a 0.8mm multiplied by 0.8mm CsI crystal. This crystal has the advantage of high detection efficiency. A detector with a pitch of 0.8mm has a higher spatial resolution than a traditional 1.6mm detector. Times.

[0040] The photodiode array has the advantages of large signal current and small dark current, which can g...

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Abstract

The invention discloses a portable X-ray detector based on a highly sensitive line array detector, which comprises a portable X light source and a portable X-ray detection box that is internally provided with an X-ray highly sensitive line array detector; the X-ray highly sensitive line array detector driven by a mechanical scanning device comprises a scintillation crystal and a photodiode array; the scintillation crystal detects the X-ray signal sent out by the X light source and inputs the X-ray signal to the photodiode array which converts the received X-ray signal into a current signal, and then the current signal is converted into a digital signal by a multi-channel analog-digital conversion ADC array to be input to a data acquisition processor; and the data acquisition processor obtains the digital signals of multi-row pixels output by the multi-channel analog-digital conversion ADC array for forming an X-ray perspective image. The image has good contrast, high detection sensitivity and smaller volume.

Description

Technical field [0001] The invention relates to an X-ray detection device, in particular to a portable X-ray detector based on a highly sensitive line array detector. Background technique [0002] At present, portable X-ray detectors are widely used in security inspection, anti-narcotics, fire fighting and other fields. [0003] One of the portable X-ray detectors commonly used in the prior art is a CCD-based portable X-ray detector, which basically uses a scintillation screen coupled CCD detector. [0004] Such as figure 1 As shown, there is a rare-earth fluorescent screen (fluorescence intensifying screen used in medical filming) in the detector. After X-rays pass through the object, they are irradiated on the rare-earth fluorescent screen to produce fluorescence. Then, the highly sensitive starlight-level CCD is used to shoot the fluorescence directly. Get the fluorescence image into the computer to get the X-ray image. [0005] The scintillation screen is coupled to the CCD ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04G01N23/083G01T1/202
Inventor 林勇王建国
Owner PURPLE SQUARE TECH
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