X-ray Inspection Apparatus Voltage Control for Image Quality
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Solution Overview
Problem
Existing X-ray inspection apparatuses experience a decrease in inspection processing capacity when operating under low voltage conditions due to defects in X-ray transmission images caused by inappropriate X-ray emission.
Innovation Solution
The X-ray inspection apparatus includes a control unit that applies a second voltage higher than the first voltage between the negative and positive poles of the X-ray bulb before or after X-ray radiation, thereby suppressing anomalous discharges and ensuring proper X-ray emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If inspection is continued under low voltage conditions (15-50 kV), then energy consumption is reduced and inspection can be maintained, but defects occur in X-ray transmission images due to inappropriate X-ray emission
Solution Approach 1:
The control unit applies high voltage periodically at predetermined intervals during low-voltage operation. This periodic high-voltage application clears surplus electrons from the X-ray bulb without requiring continuous high-voltage operation, thus maintaining low energy consumption while preventing image defects.
Solution Approach 2:
The control unit applies high voltage before starting low-voltage X-ray radiation to prevent surplus electron accumulation. By performing this preparatory action, the system ensures proper X-ray emission during subsequent low-voltage inspection without compromising image quality.
2Reliability
If high voltage is applied continuously to prevent surplus electron accumulation, then image quality is maintained, but inspection processing capacity decreases due to repeated reacquisition needs
Solution Approach 1:
Instead of continuous high-voltage application, the system uses periodic high-voltage pulses at predetermined intervals. This approach maintains image quality by clearing surplus electrons periodically while minimizing disruption to inspection workflow and maintaining high processing capacity.
Solution Approach 2:
The system applies high voltage only partially (at predetermined intervals) rather than continuously. This partial action is sufficient to clear surplus electrons and maintain image quality without the excessive time loss that would result from continuous high-voltage operation or frequent reacquisition.
3Reliability
If high voltage is applied frequently to clear surplus electrons, then X-ray emission is improved, but inspection processing capacity decreases due to time invasion
Solution Approach 1:
The control unit applies high voltage at predetermined intervals rather than frequently or continuously. This periodic timing optimizes the balance between clearing surplus electrons and minimizing time loss, ensuring stable X-ray emission without significantly reducing inspection processing capacity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively suppresses the occurrence of defects in X-ray transmission images, maintaining the inspection processing capacity even when operating under low voltage conditions.
Implementation Method 1
an X-ray radiator configured to generate X-rays by applying a first voltage between a negative pole and a positive pole in an X-ray bulb and radiate X-rays to a transported article
Implementation Method 2
when a high voltage is applied between the negative pole and the positive pole, these surplus electrons will strike the target and be expelled from the X-ray bulb
Data Source
Figure 1
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AI summary
An X-ray inspection apparatus 1 includes an X-ray radiator 6 configured to generate X-rays by applying a first voltage between a negative pole 57 and a positive pole 56 in an X-ray bulb 50 and radiate X-rays to a transported article G, an X-ray detector 7 configured to detect the X-rays radiated from the X-ray radiator 6, an inspection unit 40 configured to generate an X-ray transmission image based on a detection result of the X-ray detector 7 and inspect the article G, and a control unit 40 configured to change a voltage applied between the negative pole 57 and the positive pole 56. The control unit 40 applies a second voltage higher than the first voltage between the negative pole 57 and the positive pole 56 before starting radiation of X-rays generated by applying the first voltage or after completing radiation of X-rays generated by applying the first voltage.