X-Ray Tube Beam Deflection for Stable Focal Position
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Solution Overview
Problem
In X-ray generating apparatuses, changes in accelerating voltage cause shifts in the generation position of X-rays, necessitating frequent adjustments of the X-ray detector, as the incident position of the electron beam on the target changes, leading to instability in the focal position.
Innovation Solution
An X-ray generating apparatus with a deflector and an adjuster that adjusts the electron beam's deflection in response to changes in accelerating voltage, maintaining the incident position of the electron beam on the target, thereby stabilizing the X-ray generation position and reducing the need for detector repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the accelerating voltage is changed to change the energy of X-rays, then the energy or energy distribution of X-rays is improved, but the incident position of the electron beam on the target changes causing the focal position to shift
Solution Approach 1:
The control unit detects changes in accelerating voltage and automatically adjusts the deflecting voltage in response, creating a feedback loop that maintains constant electron beam incident position on the target despite accelerating voltage variations, thereby stabilizing the focal position while allowing X-ray energy changes
Solution Approach 2:
The system changes the deflecting voltage parameter in response to accelerating voltage changes, using this parameter adjustment to compensate for the positional drift caused by energy changes, thus maintaining focal position stability while achieving variable X-ray energy
2Use of energy by moving object
If the accelerating voltage is changed, then the energy distribution of X-rays is improved, but frequent adjustment of the X-ray detector is required
Solution Approach 1:
The control unit automatically performs the adjustment function by detecting accelerating voltage changes and autonomously modifying the deflecting voltage to maintain focal position, eliminating the need for manual detector repositioning and making the system self-regulating
3Reliability
If the deflecting voltage is adjusted in response to accelerating voltage changes, then the incident position of the electron beam is stabilized, but the device complexity increases
Solution Approach 1:
The control unit performs multiple functions: it controls the accelerating voltage, detects its changes, calculates the required deflecting voltage adjustment, and outputs the adjusted deflecting voltage, making a single component responsible for multiple tasks to minimize additional hardware complexity
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 minimizes changes in the X-ray generation position due to varying accelerating voltages, eliminating the need for frequent detector adjustments and enhancing the operational stability of X-ray imaging systems.
Implementation Method 1
a deflector configured to deflect the electron beam
Implementation Method 2
an electron gun and a target configured to generate X-rays upon receiving an electron beam emitted from the electron gun; a driving circuit configured to apply an accelerating voltage between a cathode of the electron gun and the target
Implementation Method 3
a target configured to generate X-rays upon receiving an electron beam emitted from the electron gun
Data Source
AI summary
An X-ray generating apparatus includes an X-ray generating tube including an electron gun and a target configured to generate X-rays upon receiving an electron beam emitted from the electron gun, a deflector configured to deflect the electron beam, a driving circuit configured to apply an accelerating voltage between a cathode of the electron gun and the target, and an adjuster configured to adjust deflection of the electron beam by the deflector in accordance with the accelerating voltage or an amount of change in the accelerating voltage so as to reduce a change in incident position of the electron beam onto the target due to a change in the accelerating voltage.