X-Ray Detector Bias Supply Circuit for Thermal Stabilization
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Solution Overview
Problem
The heating of photon-counting detectors in CT systems due to bias voltage switching causes thermal instability and image artifacts, leading to prolonged stabilization times and increased energy consumption.
Innovation Solution
An energy supply circuit with a voltage supply unit and monitoring unit that switches between operating and maintenance paths to provide different voltage levels, ensuring stable thermal states for detector components, minimizing energy usage and hardware complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the bias voltage is switched off to save energy, then energy consumption is reduced, but the detector requires prolonged stabilization time (up to 24 hours) to return to thermal equilibrium
Solution Approach 1:
The patent applies preliminary action by maintaining a low-level maintenance voltage during transitions between operational states. Before the detector is fully switched off to save energy, a maintenance path provides a reduced voltage level that keeps the detector in a quasi-stable thermal state, enabling rapid re-stabilization without requiring 24 hours of waiting time.
Solution Approach 2:
The patent implements dynamics by introducing a variable voltage supply system with multiple paths (operating path and maintenance path) that can dynamically adjust the voltage level based on operational requirements. This allows the system to transition smoothly between full operation and energy-saving modes while maintaining thermal stability.
2Stability of the object's composition
If the bias voltage is kept on to maintain thermal stability, then the detector remains in a stable thermal state, but energy consumption increases
Solution Approach 1:
The patent applies partial action by providing a maintenance voltage that is lower than the full operating voltage but sufficient to maintain thermal stability. This partial voltage level is just enough to keep the detector in a stable state without requiring full power consumption, achieving energy efficiency while preserving thermal equilibrium.
3Loss of time
If a complex voltage supply system with multiple paths is implemented, then rapid stabilization and energy efficiency are achieved, but hardware complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the voltage supply system into distinct functional paths: an operating path for full-power operation and a maintenance path for low-power stabilization. This segmentation allows each path to be optimized for its specific function while keeping the overall system manageable and not excessively complex.
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
Enables rapid stabilization of detector components, reducing energy consumption and maintaining image quality without additional digital functions, while minimizing hardware complexity.
Implementation Method 1
The electric field can lead to a heating of the sensor material. Temperature differences in the X-ray sensor layer, in particular, the sensor material, for example, by way of a switching on or off of the bias voltage
Data Source
AI summary
One or more example embodiments relates to an energy supply circuit for an X-ray device, having a voltage supply unit and a monitoring unit, wherein the voltage supply unit has an operating path and a maintenance path. One or more example embodiments relates to an X-ray device and a method for operating an X-ray device.