CT rack rotating part coding and code reading method

Abstract

The invention relates to a CT rack rotating part coding and code reading method, which is characterized in that two-phase signal channels of a first sensor and a second sensor are read, and an OR-value of the phase difference between two signals is acquired, so that even if an opening corresponding to one sensor is blocked by the dust, an opening corresponding to the other sensor can still be readand processed, and thus the rotating position and speed of the rack are judged. The CT rack rotating part coding and code reading method can improve the endurance capacity of CT for the environment,automatically removes influences imposed on the machine when a coding hole is blocked, does not increase the material cost and enhances the robustness of the system according to a coded signal processing method. Correct signals can also be generated even if an opening of an encoder is blocked, so that the user of the CT is enabled not to be affected.

Description

technical field [0001] The invention belongs to the technical fields of data identification; data representation; record carrier and record carrier processing, and particularly relates to a code reading method for a rotating part of a CT frame. Background technique [0002] Medical imaging is the study of the interaction with the human body by means of a certain medium (such as X-rays, electromagnetic fields, ultrasonic waves, etc.), and displays the structure and density of internal tissues and organs in the form of images for diagnosticians to judge based on the information provided by the images. A medical auxiliary way to evaluate human health status, including medical imaging system and medical image processing. Medical imaging mainly includes X-ray imaging equipment, CT equipment, positron emission tomography equipment (PET), nuclear magnetic resonance imaging equipment, etc. [0003] In the process of medical imaging, the position and speed of CT gantry rotation are ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is that in the prior art, when the coding hole is blocked, filter materials such as air filter screens are generally installed to prevent dust from entering the frame, resulting in even if the air filter screen is installed on the frame, It also cannot prevent dust from entering through the gaps in the outer cover, or dust is generated on internal wear components, and in the process of installing filter materials such as air filters, the cost of materials is increased, and the installation process is also complicated. An optimized code reading method for the rotating part of CT gantry

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