Automatic X-ray tube focus positioning device

Abstract

The invention provides an X-ray tube focus automatic positioning device which comprises a controller, an X-axis and Y-axis moving platform, a Z-axis moving platform, an X-ray tube mounted on the X-axis and Y-axis moving platform, and a detector and a collimator which are mounted on the Z-axis moving platform, the X-axis and Y-axis moving platform comprises an X-axis motor and a Y-axis motor which are used for adjusting the X-ray tube to find the focus position, and the Z-axis moving platform comprises a Z-axis motor which is used for moving the detector up and down so as to conveniently disassemble and assemble the X-ray tube; the controller controls the X-axis motor, the Y-axis motor and the Z motor in the following mode to achieve automatic positioning of the focus of the X-ray tube, the X-axis motor and the Y-axis motor can be controlled through the controller to move the X-ray tube, and meanwhile whether the connecting line of the focus of the X-ray tube and the hole center point of the collimator is perpendicular to the flange plate plane of the X-ray tube or not is judged according to data obtained through sampling of the detector. And a closed-loop feedback control system is formed.

Description

technical field [0001] The invention relates to the field of X-ray tubes, in particular to an X-ray tube focus automatic positioning device. Background technique [0002] When testing the X-ray tube, it is necessary to detect the focal position of the X-ray tube. The early X-ray tube inspection only focused on the detection of whether the X-ray tube leaked oil, and could not test other various characteristics of the X-ray tube, such as consistency. performance, stability, output linearity, whether to discharge, etc. [0003] When working, the high-voltage power supply applies a high voltage of tens of thousands of volts to the X-ray tube, and the X-ray tube generates X-rays to excite the sample under test. Each element in the excited sample emits secondary X-rays (fluorescence X-rays), and photodetectors convert these different wavelengths of light into pulsed signals of different heights, which are then converted into spectral shapes by a digital signal processor. Data, t...

AI Technical Summary

Problems solved by technology

[0004] However, in the current X-ray tube inspection process, there is no device for automatic focus positioning of the X-ray tube, which affects the accuracy and effect of the inspection.