Device and method for calibrating transillumination center of X-ray machine

Abstract

The invention, which belongs to the technical field of ray detection, particularly relates to a device and method for calibrating a transillumination center of an X-ray machine. According to the technical scheme, the device comprises an L-shaped fixing plate, a vertical shaft, a supporting plate, a motor, a laser emitter, a metal shell and a battery. The L-shaped fixing plate is fixedly connectedwith the vertical shaft; one end of the supporting plate is rotationally connected with the vertical shaft; and a rack wheel is arranged at the vertical shaft. The laser emitter is arranged at the lower portion of the other end of the supporting plate; the motor and the metal shell are arranged on the supporting plate; and a pinion is arranged at an output shaft of the motor and is engaged with the rack wheel. A battery is arranged in the metal shell and is connected with the motor and a working power supply terminal of the laser emitter. According to the invention, the influence of the electromagnetic interference on the ray tube is reduced to realize the remote control over movement and opening and closing on the premise that the indication position is accurate and reliable.

Description

technical field [0001] The invention belongs to the technical field of radiation detection, and in particular relates to a device and method for calibrating the transillumination center of an X-ray machine. Background technique [0002] When carrying out radiographic inspection, it is necessary to clarify the transillumination center before the parts can be arranged for transillumination, so as to ensure the reliability and accuracy of the radiographic inspection results. [0003] There are two methods for determining the transillumination center of an X-ray machine: [0004] 1) Place the plumb bob at the center of the X-ray machine window. This method relies on gravity to determine the transillumination center. Its disadvantages are ① the plumb weight swings, resulting in inaccurate positioning; ② the height of the X-ray head needs to be adjusted so that the suspension end of the plumb weight is close to the X-ray machine window, which increases the operating time; ③ For ...

AI Technical Summary

Problems solved by technology

Its disadvantages are ① the plumb weight swings, resulting in inaccurate positioning; ② the height of the X-ray head needs to be adjusted so that the suspension end of the plumb weight is close to the X-ray machine window, which increases the operating time; ③ For the case where the X-ray head needs to be rotated , that is, when the transillumination center rotates, the plumb bob cannot be used

Its disadvantages are: ①The laser is fixed by the self-locking fixing screws, which is easy to drop by itself, and it is blocked directly under the radiation window, which affects the detection and imaging; The tube head of the X-ray machine needs to be lowered after use; ③The laser is a dot-like spot, which is not easy to identify during use; ④The circuit is not electromagnetically shielded, and there is electromagnetic interference to the X-ray tube

[0006] The defects of the above methods will affect the reliability and accuracy of the radiographic inspection results

Images