X-ray Detector Temperature Stability During Reconfiguration
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Solution Overview
Problem
Directly-converting X-ray detectors experience temperature drift issues during reconfiguration, leading to unwanted image artifacts and prolonged outage times due to the deactivation of the control device's electronics units, which disrupt the stable working temperature of the sensor material.
Innovation Solution
The control device maintains the operation of the conditioning unit and minimizes the interruption or continuous operation of the heating unit during reconfiguration, using circuit-based measures to keep the sensor material at a predetermined working temperature, allowing for rapid configuration of the electronics units and preventing temperature deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronics units are deactivated during reconfiguration, then the configuration process can be performed, but the sensor material temperature becomes unstable causing drift effects and image artifacts
Solution Approach 1:
The patent applies preliminary action by maintaining the operation of the conditioning unit and heating unit before and during the reconfiguration process. The control device is designed to keep these units active throughout the configuration process, ensuring temperature stability is established before reconfiguration begins and maintained during it, thereby preventing drift effects and image artifacts that would otherwise occur during electronics reconfiguration.
2Stability of the object's composition
If the conditioning unit and heating unit are kept operational during reconfiguration, then temperature stability is maintained, but the configuration time is extended
Solution Approach 1:
The patent implements continuity of useful action by keeping the conditioning unit and heating unit operational continuously throughout the reconfiguration process. The control device maintains power supply to these units during configuration, ensuring uninterrupted temperature stabilization. This continuous operation eliminates the need to shut down and restart these units, thereby minimizing actual outage time while maintaining temperature stability during the configuration event.
3Stability of the object's composition
If the heating unit is operated continuously to maintain working temperature, then temperature drift is prevented, but energy consumption increases
Solution Approach 1:
The patent applies feedback by using the regulating unit to continuously monitor and control the heating unit's operation. The control device receives feedback about the sensor material temperature and adjusts the heating unit's power accordingly, maintaining the working temperature only when necessary. This feedback-based control prevents unnecessary energy consumption while ensuring temperature stability is maintained during critical operations such as reconfiguration.
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 approach reduces outage times and maintains image quality by ensuring a stable temperature during reconfiguration processes, enabling 'always-on' operation with minimal impact on image quality, even during short configuration periods.
Implementation Method 1
a heating unit for the sensor material, regulated by a regulating unit to maintain the working temperature
Implementation Method 2
a conditioning unit causing a base current to flow through the sensor material... currents, in this case the base current and the measuring current, through the sensor material also lead to heating of the sensor material
Implementation Method 3
in the case of direct conversion, a conversion of X-ray radiation into charge carriers directly is aimed for... based upon the absorption of X-ray radiation in a sensor material, specifically a semiconductor, which results in the generation of electron-hole pairs
Data Source
AI summary
A directly-converting X-ray detector includes: a directly-converting sensor material, which is to be maintained at a working temperature, and configured to have a DC voltage applied thereto; a conditioning unit configured to cause a base current to flow through the sensor material; a heating unit for the sensor material, the heating unit configured to be regulated by a regulating unit to maintain the working temperature; and a control device having a plurality of electronics units, which include the regulating unit. When a new configuration and/or a reconfiguration process takes place, the control device is configured to maintain the operation of the conditioning unit, and to interrupt the operation of the heating unit and/or maintain the operation of the heating unit with the control value most recently ascertained in ordinary operation of the regulating unit.